Nandakumar, Tarini - 6th period - Unit 1

WORD FORMS (cô Trinh)

🔹 GIAI ĐOẠN 2 – PHẦN 1 ① TOPIC IELTS: EDUCATION & STUDY A2 → B1 | 1501–1750 A. Hệ thống giáo dục 1501. education – giáo dục 1502. educational – thuộc giáo dục 1503. system – hệ thống 1504. level – cấp độ 1505. primary school – tiểu học 1506. secondary school – trung học 1507. high school – cấp 3 1508. university – đại học 1509. college – cao đẳng 1510. campus – khuôn viên trường 1511. public school – trường công 1512. private school – trường tư 1513. boarding school – trường nội trú B. Học tập – quá trình 1514. study – học 1515. learning – việc học 1516. self-study – tự học 1517. revise – ôn tập 1518. review – xem lại 1519. prepare for – chuẩn bị cho 1520. concentrate – tập trung 1521. focus on – tập trung vào 1522. improve – cải thiện 1523. develop – phát triển 1524. progress – tiến bộ 1525. effort – nỗ lực 1526. goal – mục tiêu C. Môn học – nội dung 1527. subject – môn học 1528. course – khóa học 1529. major – chuyên ngành 1530. lesson – bài học 1531. topic – chủ đề 1532. skill – kỹ năng 1533. knowledge – kiến thức 1534. theory – lý thuyết 1535. practice – thực hành 1536. homework – bài tập về nhà 1537. assignment – bài tập lớn 1538. project – dự án D. Thi cử – đánh giá 1539. exam – kỳ thi 1540. test – bài kiểm tra 1541. assessment – đánh giá 1542. mark – điểm 1543. score – điểm số 1544. grade – xếp loại 1545. result – kết quả 1546. pass – đỗ 1547. fail – trượt 1548. achievement – thành tích 1549. certificate – chứng chỉ 1550. qualification – bằng cấp E. Giáo viên – học sinh 1551. teacher – giáo viên 1552. lecturer – giảng viên 1553. instructor – người hướng dẫn 1554. student – sinh viên 1555. pupil – học sinh 1556. classmate – bạn cùng lớp 1557. learner – người học 1558. graduate – sinh viên tốt nghiệp 1559. freshman – sinh viên năm nhất 1560. senior – sinh viên năm cuối F. Phương pháp học 1561. method – phương pháp 1562. approach – cách tiếp cận 1563. strategy – chiến lược 1564. technique – kỹ thuật 1565. online learning – học trực tuyến 1566. distance learning – học từ xa 1567. group work – làm việc nhóm 1568. discussion – thảo luận 1569. presentation – thuyết trình 1570. research – nghiên cứu G. Môi trường học 1571. classroom – lớp học 1572. library – thư viện 1573. laboratory – phòng thí nghiệm 1574. equipment – thiết bị 1575. facility – cơ sở vật chất 1576. resource – tài nguyên 1577. textbook – sách giáo khoa 1578. material – tài liệu 1579. schedule – thời khóa biểu 1580. timetable – lịch học H. Ý kiến – IELTS hay dùng 1581. opinion – ý kiến 1582. view – quan điểm 1583. idea – ý tưởng 1584. point of view – góc nhìn 1585. advantage – lợi ích 1586. disadvantage – bất lợi 1587. benefit – lợi ích 1588. drawback – hạn chế 1589. importance – tầm quan trọng 1590. influence – ảnh hưởng I. Cụm từ giáo dục (rất hay ra IELTS) 1591. get an education – được học hành 1592. receive education – nhận giáo dục 1593. gain knowledge – tiếp thu kiến thức 1594. develop skills – phát triển kỹ năng 1595. improve academic performance – cải thiện học tập 1596. take an exam – dự thi 1597. pass an exam – đỗ kỳ thi 1598. fail an exam – trượt kỳ thi 1599. achieve good results – đạt kết quả tốt 1600. prepare for the future – chuẩn bị cho tương lai J. Hoàn tất EDUCATION 1601. lifelong learning – học suốt đời 1602. academic success – thành công học tập 1603. school pressure – áp lực học đường 1604. study abroad – du học 1605. higher education – giáo dục bậc cao 1606. compulsory education – giáo dục bắt buộc 1607. equal access – tiếp cận bình đẳng 1608. educational opportunity – cơ hội học tập 1609. learning environment – môi trường học 1610. quality education – giáo dục chất lượng ② TOPIC IELTS: WORK & CAREER A2 → B1 | 1611–1860 ⸻ A. Công việc – khái niệm chung 1611. work – công việc 1612. job – nghề nghiệp 1613. career – sự nghiệp 1614. occupation – nghề 1615. employment – việc làm 1616. unemployment – thất nghiệp 1617. profession – nghề chuyên môn 1618. position – vị trí 1619. role – vai trò 1620. duty – nhiệm vụ B. Nơi làm việc 1621. workplace – nơi làm việc 1622. office – văn phòng 1623. factory – nhà máy 1624. company – công ty 1625. organization – tổ chức 1626. firm – hãng 1627. department – phòng ban 1628. branch – chi nhánh 1629. headquarters – trụ sở chính 1630. site – địa điểm C. Nhân sự – chức danh 1631. employee – nhân viên 1632. employer – người sử dụng lao động 1633. boss – sếp 1634. manager – quản lý 1635. supervisor – giám sát 1636. colleague – đồng nghiệp 1637. co-worker – đồng nghiệp 1638. staff – nhân viên 1639. worker – công nhân 1640. intern – thực tập sinh D. Tuyển dụng – xin việc 1641. apply for – nộp đơn xin 1642. application – đơn xin việc 1643. CV / resume – sơ yếu lý lịch 1644. interview – phỏng vấn 1645. candidate – ứng viên 1646. qualification – trình độ 1647. experience – kinh nghiệm 1648. skill – kỹ năng 1649. requirement – yêu cầu 1650. opportunity – cơ hội E. Thời gian – hình thức làm việc 1651. full-time – toàn thời gian 1652. part-time – bán thời gian 1653. overtime – làm thêm giờ 1654. shift – ca làm 1655. schedule – lịch làm 1656. flexible hours – giờ linh hoạt 1657. remote work – làm việc từ xa 1658. work from home – làm tại nhà 1659. temporary job – việc tạm thời 1660. permanent job – việc lâu dài F. Lương – phúc lợi 1661. salary – lương tháng 1662. wage – lương theo giờ 1663. income – thu nhập 1664. bonus – thưởng 1665. allowance – phụ cấp 1666. benefit – phúc lợi 1667. pension – lương hưu 1668. insurance – bảo hiểm 1669. tax – thuế 1670. pay rise – tăng lương G. Hoạt động công việc 1671. task – nhiệm vụ 1672. assignment – công việc được giao 1673. responsibility – trách nhiệm 1674. project – dự án 1675. deadline – hạn chót 1676. meeting – cuộc họp 1677. report – báo cáo 1678. presentation – thuyết trình 1679. teamwork – làm việc nhóm 1680. cooperation – hợp tác H. Kỹ năng làm việc (B1 rất hay dùng) 1681. communication skills – kỹ năng giao tiếp 1682. problem-solving skills – kỹ năng giải quyết vấn đề 1683. time management – quản lý thời gian 1684. leadership – khả năng lãnh đạo 1685. creativity – sự sáng tạo 1686. adaptability – khả năng thích nghi 1687. responsibility – tinh thần trách nhiệm 1688. independence – tính độc lập 1689. confidence – sự tự tin 1690. discipline – kỷ luật I. Phát triển sự nghiệp 1691. promotion – thăng chức 1692. training – đào tạo 1693. development – phát triển 1694. career path – lộ trình sự nghiệp 1695. job satisfaction – sự hài lòng công việc 1696. job security – sự ổn định việc làm 1697. work-life balance – cân bằng công việc–cuộc sống 1698. career change – chuyển nghề 1699. resign – nghỉ việc 1700. retire – nghỉ hưu J. Vấn đề công việc 1701. stress – căng thẳng 1702. pressure – áp lực 1703. workload – khối lượng công việc 1704. conflict – xung đột 1705. competition – cạnh tranh 1706. discrimination – phân biệt đối xử 1707. equal opportunity – cơ hội bình đẳng 1708. job loss – mất việc 1709. low pay – lương thấp 1710. long working hours – giờ làm dài K. Ý kiến – IELTS Task 2 hay gặp 1711. in my opinion – theo tôi 1712. from my perspective – theo quan điểm của tôi 1713. a major factor – yếu tố chính 1714. an important role – vai trò quan trọng 1715. play a role in – đóng vai trò trong 1716. lead to – dẫn đến 1717. result in – dẫn đến 1718. be responsible for – chịu trách nhiệm cho 1719. depend on – phụ thuộc vào 1720. contribute to – đóng góp vào L. Cụm từ công việc thông dụng 1721. get a job – có việc 1722. find a job – tìm việc 1723. lose a job – mất việc 1724. change jobs – đổi việc 1725. apply for a job – xin việc 1726. attend an interview – dự phỏng vấn 1727. gain experience – tích lũy kinh nghiệm 1728. improve skills – cải thiện kỹ năng 1729. earn a living – kiếm sống 1730. make a living – kiếm sống M. Hoàn tất WORK & CAREER 1731. career opportunities – cơ hội nghề nghiệp 1732. working conditions – điều kiện làm việc 1733. job market – thị trường lao động 1734. skilled workers – lao động có tay nghề 1735. unskilled workers – lao động phổ thông 1736. job demand – nhu cầu việc làm 1737. job supply – nguồn cung việc làm 1738. economic growth – tăng trưởng kinh tế 1739. labor force – lực lượng lao động 1740. employment rate – tỷ lệ việc làm 1741. workplace safety – an toàn lao động 1742. job training program – chương trình đào tạo nghề 1743. career prospects – triển vọng nghề nghiệp 1744. professional development – phát triển chuyên môn 1745. working environment – môi trường làm việc 1746. job performance – hiệu suất công việc 1747. take responsibility – chịu trách nhiệm 1748. work efficiently – làm việc hiệu quả 1749. achieve success – đạt thành công 1750. long-term career – sự nghiệp lâu dài ③ TOPIC IELTS: HEALTH & LIFESTYLE A2 → B1 | 1751–2000 ⸻ A. Sức khỏe chung 1751. health – sức khỏe 1752. healthy – khỏe mạnh 1753. unhealthy – không lành mạnh 1754. fitness – thể lực 1755. illness – bệnh tật 1756. disease – bệnh 1757. condition – tình trạng sức khỏe 1758. medical – thuộc y tế 1759. physical – thể chất 1760. mental – tinh thần B. Cơ thể – cảm giác 1761. pain – cơn đau 1762. headache – đau đầu 1763. stomachache – đau bụng 1764. fever – sốt 1765. cough – ho 1766. cold – cảm lạnh 1767. flu – cúm 1768. injury – chấn thương 1769. tired – mệt 1770. exhausted – kiệt sức C. Điều trị – y tế 1771. doctor – bác sĩ 1772. nurse – y tá 1773. patient – bệnh nhân 1774. hospital – bệnh viện 1775. clinic – phòng khám 1776. treatment – điều trị 1777. medicine – thuốc 1778. pill – viên thuốc 1779. prescription – đơn thuốc 1780. recovery – hồi phục D. Lối sống lành mạnh 1781. lifestyle – lối sống 1782. balance – cân bằng 1783. routine – thói quen 1784. habit – thói quen 1785. healthy diet – chế độ ăn lành mạnh 1786. nutrition – dinh dưỡng 1787. exercise – tập thể dục 1788. workout – buổi tập 1789. rest – nghỉ ngơi 1790. sleep – giấc ngủ E. Ăn uống 1791. meal – bữa ăn 1792. breakfast – bữa sáng 1793. lunch – bữa trưa 1794. dinner – bữa tối 1795. snack – đồ ăn vặt 1796. vegetable – rau 1797. fruit – trái cây 1798. protein – chất đạm 1799. sugar – đường 1800. fat – chất béo F. Hoạt động thể chất 1801. sport – thể thao 1802. activity – hoạt động 1803. run – chạy 1804. walk – đi bộ 1805. swim – bơi 1806. cycle – đạp xe 1807. gym – phòng tập 1808. yoga – yoga 1809. stretch – giãn cơ 1810. strength – sức mạnh G. Vấn đề sức khỏe hiện đại 1811. stress – căng thẳng 1812. pressure – áp lực 1813. anxiety – lo âu 1814. depression – trầm cảm 1815. obesity – béo phì 1816. addiction – nghiện 1817. smoking – hút thuốc 1818. alcohol – rượu 1819. junk food – đồ ăn nhanh 1820. lack of exercise – thiếu vận động H. Phòng ngừa 1821. prevent – phòng ngừa 1822. prevention – sự phòng tránh 1823. avoid – tránh 1824. protect – bảo vệ 1825. check-up – khám tổng quát 1826. vaccine – vắc-xin 1827. hygiene – vệ sinh 1828. wash hands – rửa tay 1829. safety – an toàn 1830. awareness – nhận thức I. Cụm từ IELTS quen thuộc 1831. stay healthy – giữ sức khỏe 1832. keep fit – giữ dáng 1833. be in good shape – thể trạng tốt 1834. suffer from – mắc (bệnh) 1835. recover from – hồi phục sau 1836. lead a healthy life – sống lành mạnh 1837. take care of – chăm sóc 1838. be good for – tốt cho 1839. be harmful to – có hại cho 1840. improve health – cải thiện sức khỏe J. Ý kiến – Task 2 1841. a healthy lifestyle – lối sống lành mạnh 1842. modern life – cuộc sống hiện đại 1843. a common problem – vấn đề phổ biến 1844. play an important role – đóng vai trò quan trọng 1845. have a positive effect – có tác động tích cực 1846. have a negative impact – có tác động tiêu cực 1847. raise awareness – nâng cao nhận thức 1848. take action – hành động 1849. deal with stress – đối phó căng thẳng 1850. improve quality of life – cải thiện chất lượng sống K. Hoàn tất HEALTH & LIFESTYLE 1851. physical health – sức khỏe thể chất 1852. mental health – sức khỏe tinh thần 1853. balanced diet – chế độ ăn cân bằng 1854. regular exercise – tập đều đặn 1855. healthy habits – thói quen tốt 1856. medical care – chăm sóc y tế 1857. long-term health – sức khỏe lâu dài 1858. daily routine – sinh hoạt hằng ngày 1859. personal well-being – hạnh phúc cá nhân 1860. live longer – sống lâu hơn ④ TOPIC IELTS: ENVIRONMENT A2 → B1 | 2001–2250 ⸻ A. Môi trường chung 2001. environment – môi trường 2002. nature – thiên nhiên 2003. natural – tự nhiên 2004. planet – hành tinh 2005. earth – Trái Đất 2006. climate – khí hậu 2007. weather – thời tiết 2008. ecosystem – hệ sinh thái 2009. resource – tài nguyên 2010. natural resources – tài nguyên thiên nhiên B. Ô nhiễm 2011. pollution – ô nhiễm 2012. air pollution – ô nhiễm không khí 2013. water pollution – ô nhiễm nước 2014. noise pollution – ô nhiễm tiếng ồn 2015. waste – rác thải 2016. litter – rác vứt bừa bãi 2017. garbage – rác 2018. plastic – nhựa 2019. chemical – hóa chất 2020. toxic – độc hại C. Biến đổi khí hậu 2021. climate change – biến đổi khí hậu 2022. global warming – nóng lên toàn cầu 2023. greenhouse effect – hiệu ứng nhà kính 2024. carbon dioxide – khí CO₂ 2025. emission – khí thải 2026. temperature – nhiệt độ 2027. rise – tăng lên 2028. extreme weather – thời tiết cực đoan 2029. drought – hạn hán 2030. flood – lũ lụt D. Bảo vệ môi trường 2031. protect – bảo vệ 2032. protection – sự bảo vệ 2033. conserve – bảo tồn 2034. conservation – sự bảo tồn 2035. preserve – gìn giữ 2036. reduce – giảm 2037. reuse – tái sử dụng 2038. recycle – tái chế 2039. waste management – quản lý rác 2040. environmental protection – bảo vệ môi trường E. Năng lượng 2041. energy – năng lượng 2042. power – điện 2043. electricity – điện năng 2044. fossil fuels – nhiên liệu hóa thạch 2045. coal – than đá 2046. oil – dầu mỏ 2047. gas – khí đốt 2048. renewable energy – năng lượng tái tạo 2049. solar energy – năng lượng mặt trời 2050. wind energy – năng lượng gió F. Thiên nhiên & động vật 2051. wildlife – động vật hoang dã 2052. animal – động vật 2053. plant – thực vật 2054. forest – rừng 2055. tree – cây 2056. ocean – đại dương 2057. river – sông 2058. mountain – núi 2059. species – loài 2060. endangered – có nguy cơ tuyệt chủng G. Vấn đề môi trường 2061. deforestation – phá rừng 2062. extinction – tuyệt chủng 2063. overpopulation – quá dân số 2064. urbanization – đô thị hóa 2065. industrialization – công nghiệp hóa 2066. overuse – lạm dụng 2067. shortage – thiếu hụt 2068. destruction – sự tàn phá 2069. environmental damage – thiệt hại môi trường 2070. loss of biodiversity – mất đa dạng sinh học H. Hành động cá nhân 2071. save energy – tiết kiệm năng lượng 2072. save water – tiết kiệm nước 2073. reduce waste – giảm rác 2074. use public transport – dùng phương tiện công cộng 2075. plant trees – trồng cây 2076. avoid plastic bags – tránh túi nhựa 2077. eco-friendly – thân thiện môi trường 2078. green lifestyle – lối sống xanh 2079. environmental awareness – ý thức môi trường 2080. take responsibility – chịu trách nhiệm I. Chính phủ & xã hội 2081. government – chính phủ 2082. policy – chính sách 2083. law – luật 2084. regulation – quy định 2085. organization – tổ chức 2086. campaign – chiến dịch 2087. public awareness – nhận thức cộng đồng 2088. international cooperation – hợp tác quốc tế 2089. environmental project – dự án môi trường 2090. sustainable development – phát triển bền vững J. Cụm từ dùng trong Writing 2091. protect the environment – bảo vệ môi trường 2092. cause serious problems – gây vấn đề nghiêm trọng 2093. have a bad effect on – ảnh hưởng xấu tới 2094. lead to – dẫn đến 2095. result in – dẫn đến 2096. be responsible for – chịu trách nhiệm 2097. play a key role – đóng vai trò then chốt 2098. find solutions – tìm giải pháp 2099. take immediate action – hành động ngay 2100. ensure a better future – đảm bảo tương lai tốt hơn K. Hoàn tất TOPIC ENVIRONMENT 2101. environmental issue – vấn đề môi trường 2102. serious threat – mối đe dọa nghiêm trọng 2103. long-term impact – tác động lâu dài 2104. sustainable future – tương lai bền vững 2105. balance between humans and nature – cân bằng con người & thiên nhiên 2106. protect natural habitats – bảo vệ môi trường sống tự nhiên 2107. reduce carbon emissions – giảm khí thải carbon 2108. green energy – năng lượng xanh 2109. environmental responsibility – trách nhiệm môi trường 2110. protect the planet – bảo vệ hành tinh ⑤ TOPIC IELTS: TECHNOLOGY & MEDIA A2 → B1 | 2251–2500 ⸻ A. Công nghệ chung 2251. technology – công nghệ 2252. technological – thuộc công nghệ 2253. device – thiết bị 2254. machine – máy móc 2255. equipment – thiết bị 2256. digital – kỹ thuật số 2257. modern – hiện đại 2258. innovation – đổi mới 2259. invention – phát minh 2260. development – sự phát triển B. Thiết bị cá nhân 2261. computer – máy tính 2262. laptop – máy tính xách tay 2263. smartphone – điện thoại thông minh 2264. tablet – máy tính bảng 2265. screen – màn hình 2266. keyboard – bàn phím 2267. mouse – chuột 2268. charger – bộ sạc 2269. battery – pin 2270. headphone – tai nghe C. Internet & mạng xã hội 2271. internet – internet 2272. website – trang web 2273. online – trực tuyến 2274. offline – ngoại tuyến 2275. social media – mạng xã hội 2276. platform – nền tảng 2277. application (app) – ứng dụng 2278. account – tài khoản 2279. password – mật khẩu 2280. data – dữ liệu D. Hoạt động công nghệ 2281. search – tìm kiếm 2282. download – tải xuống 2283. upload – tải lên 2284. install – cài đặt 2285. update – cập nhật 2286. connect – kết nối 2287. share – chia sẻ 2288. save – lưu 2289. delete – xóa 2290. store – lưu trữ E. Truyền thông 2291. media – truyền thông 2292. news – tin tức 2293. newspaper – báo 2294. magazine – tạp chí 2295. television – truyền hình 2296. radio – đài phát thanh 2297. channel – kênh 2298. program – chương trình 2299. advertisement – quảng cáo 2300. report – bản tin F. Lợi ích công nghệ 2301. convenience – sự tiện lợi 2302. efficiency – hiệu quả 2303. save time – tiết kiệm thời gian 2304. easy access – dễ tiếp cận 2305. communication – giao tiếp 2306. information – thông tin 2307. entertainment – giải trí 2308. improve productivity – tăng năng suất 2309. global connection – kết nối toàn cầu 2310. daily life – cuộc sống hằng ngày G. Mặt trái công nghệ 2311. addiction – nghiện 2312. screen time – thời gian dùng màn hình 2313. distraction – sự xao nhãng 2314. privacy – quyền riêng tư 2315. personal data – dữ liệu cá nhân 2316. cybercrime – tội phạm mạng 2317. fake news – tin giả 2318. misinformation – thông tin sai lệch 2319. security risk – rủi ro bảo mật 2320. lack of face-to-face interaction – thiếu giao tiếp trực tiếp H. Giáo dục & công nghệ 2321. online learning – học trực tuyến 2322. e-learning – học điện tử 2323. virtual class – lớp học ảo 2324. digital skills – kỹ năng số 2325. educational platform – nền tảng học tập 2326. distance learning – học từ xa 2327. online course – khóa học online 2328. video lesson – bài học video 2329. access knowledge – tiếp cận tri thức 2330. learning tool – công cụ học tập I. Cụm từ Writing – Speaking 2331. play an important role – đóng vai trò quan trọng 2332. have a strong influence on – ảnh hưởng mạnh tới 2333. make life easier – làm cuộc sống dễ hơn 2334. depend on technology – phụ thuộc công nghệ 2335. keep in touch – giữ liên lạc 2336. spread information – lan truyền thông tin 2337. change the way people live – thay đổi cách sống 2338. improve communication – cải thiện giao tiếp 2339. cause problems – gây vấn đề 2340. bring benefits – mang lại lợi ích J. Hoàn tất TECHNOLOGY & MEDIA 2341. modern technology – công nghệ hiện đại 2342. digital age – thời đại số 2343. technological advancement – tiến bộ công nghệ 2344. mass media – truyền thông đại chúng 2345. online communication – giao tiếp trực tuyến 2346. responsible use – sử dụng có trách nhiệm 2347. control screen time – kiểm soát thời gian màn hình 2348. protect privacy – bảo vệ quyền riêng tư 2349. reliable information – thông tin đáng tin 2350. technology in daily life – công nghệ trong đời sống ⑥ SYNONYMS & PARAPHRASE CORE A2 → B1 | 2501–3000 ⸻ A. Động từ thông dụng → synonym B1 2501. start → begin 2502. end → finish 2503. help → assist 2504. get → obtain 2505. make → create 2506. show → demonstrate 2507. use → utilize 2508. need → require 2509. give → provide 2510. keep → maintain B. Động từ học thuật nhẹ 2511. increase – tăng 2512. decrease – giảm 2513. improve – cải thiện 2514. reduce – giảm bớt 2515. develop – phát triển 2516. affect – ảnh hưởng 2517. support – ủng hộ 2518. allow – cho phép 2519. prevent – ngăn chặn 2520. encourage – khuyến khích C. Tính từ cơ bản → B1 2521. big → large 2522. small → tiny 2523. important → significant 2524. good → positive 2525. bad → negative 2526. easy → simple 2527. hard → difficult 2528. fast → rapid 2529. slow → gradual 2530. useful → beneficial D. Trạng từ thay thế 2531. very → extremely 2532. really → highly 2533. often → frequently 2534. usually → normally 2535. sometimes → occasionally 2536. clearly → obviously 2537. quickly → rapidly 2538. slowly → gradually 2539. almost → nearly 2540. maybe → possibly E. Danh từ học thuật nhẹ 2541. problem – vấn đề 2542. solution – giải pháp 2543. reason – lý do 2544. result – kết quả 2545. effect – tác động 2546. cause – nguyên nhân 2547. benefit – lợi ích 2548. disadvantage – bất lợi 2549. advantage – lợi thế 2550. factor – yếu tố F. Cụm paraphrase cực hay dùng 2551. a lot of → a large amount of 2552. many → numerous 2553. few → a small number of 2554. people → individuals 2555. children → young people 2556. old people → the elderly 2557. nowadays → these days 2558. in the future → in the long term 2559. more and more → an increasing number of 2560. less and less → a decreasing amount of G. Liên kết câu B1 2561. because → due to 2562. because of → owing to 2563. so → therefore 2564. but → however 2565. also → moreover 2566. and → in addition 2567. for example → for instance 2568. in my opinion → from my perspective 2569. first → firstly 2570. finally → eventually H. Writing Task 2 – cụm “ăn điểm” 2571. It is widely believed that – Người ta tin rằng 2572. There is no doubt that – Không nghi ngờ gì rằng 2573. It can be seen that – Có thể thấy rằng 2574. One possible reason is that – Một lý do có thể là 2575. This leads to – Điều này dẫn đến 2576. As a result – Do đó 2577. For this reason – Vì lý do này 2578. In conclusion – Kết luận 2579. To sum up – Tóm lại 2580. In my view – Theo quan điểm của tôi I. Speaking B1 – phản xạ nhanh 2581. I think that – Tôi nghĩ rằng 2582. In my opinion – Theo tôi 2583. From my point of view – Từ góc nhìn của tôi 2584. I agree with – Tôi đồng ý với 2585. I disagree with – Tôi không đồng ý với 2586. It depends on – Tùy thuộc vào 2587. For example – Ví dụ 2588. Such as – Chẳng hạn như 2589. In general – Nhìn chung 2590. In daily life – Trong đời sống hằng ngày J. Collocations B1 bắt buộc 2591. make a decision – đưa ra quyết định 2592. take responsibility – chịu trách nhiệm 2593. have an effect on – ảnh hưởng đến 2594. play an important role – đóng vai trò quan trọng 2595. pay attention to – chú ý đến 2596. take part in – tham gia 2597. deal with – xử lý 2598. lead to – dẫn đến 2599. depend on – phụ thuộc vào 2600. contribute to – đóng góp cho K. Hoàn tất GIAI ĐOẠN 2 2601. basic academic vocabulary 2602. topic-based vocabulary 2603. synonym awareness 2604. paraphrasing skills 2605. reading comprehension 2606. listening accuracy 2607. speaking fluency 2608. writing clarity 2609. B1 readiness 2610. solid foundation ⑦ SYNONYMS & PARAPHRASE THEO TOPIC (2611–2700) A. People / Society 2611. people → individuals – cá nhân 2612. people → the public – công chúng 2613. society – xã hội 2614. community – cộng đồng 2615. population – dân số 2616. citizen – công dân 2617. resident – cư dân 2618. youngster – người trẻ 2619. adult – người trưởng thành 2620. senior – người cao tuổi B. Education 2621. education – giáo dục 2622. schooling – việc đi học 2623. academic – học thuật 2624. subject – môn học 2625. curriculum – chương trình học 2626. lesson – bài học 2627. assignment – bài tập 2628. examination – kỳ thi 2629. qualification – bằng cấp 2630. knowledge – kiến thức C. Work / Career 2631. job – công việc 2632. occupation – nghề nghiệp 2633. career – sự nghiệp 2634. employee – nhân viên 2635. employer – chủ lao động 2636. colleague – đồng nghiệp 2637. workplace – nơi làm việc 2638. salary – lương 2639. income – thu nhập 2640. working conditions – điều kiện làm việc D. Health (paraphrase hay dùng) 2641. healthy – in good health – khỏe mạnh 2642. unhealthy – harmful to health – có hại sức khỏe 2643. illness – health problem – vấn đề sức khỏe 2644. disease – serious illness – bệnh nghiêm trọng 2645. treatment – medical care – điều trị 2646. recovery – return to health – hồi phục 2647. exercise – physical activity – vận động 2648. diet – eating habits – thói quen ăn uống 2649. stress – mental pressure – áp lực tinh thần 2650. lifestyle – way of life – lối sống E. Environment 2651. environment – natural surroundings – môi trường tự nhiên 2652. pollution – environmental damage – ô nhiễm 2653. protect – safeguard – bảo vệ 2654. destroy – damage badly – phá hủy 2655. waste – rubbish – rác 2656. recycle – reuse materials – tái chế 2657. climate – weather conditions – khí hậu 2658. global warming – rising temperatures – nóng lên toàn cầu 2659. energy – power source – năng lượng 2660. resources – natural materials – tài nguyên F. Technology 2661. technology – modern devices – công nghệ 2662. internet – online network – mạng internet 2663. social media – online platforms – mạng xã hội 2664. device – electronic equipment – thiết bị 2665. screen – display – màn hình 2666. information – data – thông tin 2667. communicate – keep in contact – giao tiếp 2668. download – save from internet – tải về 2669. addiction – strong dependence – nghiện 2670. privacy – personal information – quyền riêng tư G. Opinion & Argument 2671. opinion – personal view – quan điểm cá nhân 2672. idea – thought – ý tưởng 2673. agree – share the same view – đồng ý 2674. disagree – hold a different view – không đồng ý 2675. discuss – talk about – thảo luận 2676. explain – make clear – giải thích 2677. support – give reasons for – ủng hộ 2678. oppose – be against – phản đối 2679. point of view – perspective – góc nhìn 2680. conclusion – final opinion – kết luận H. Cause – Effect (B1 bắt buộc) 2681. cause – reason – nguyên nhân 2682. effect – result – kết quả 2683. lead to – cause – dẫn đến 2684. result in – cause – dẫn đến 2685. because of – due to – vì 2686. therefore – as a result – do đó 2687. so – for this reason – vì vậy 2688. consequence – outcome – hệ quả 2689. impact – influence – tác động 2690. affect – influence – ảnh hưởng I. Degree / Quantity 2691. many – a large number of – nhiều 2692. much – a large amount of – nhiều 2693. few – a small number of – ít 2694. little – a small amount of – ít 2695. more – a higher number – nhiều hơn 2696. less – a lower amount – ít hơn 2697. most – the majority – phần lớn 2698. some – a number of – một số 2699. almost all – nearly all – gần như tất cả 2700. none – no one / nothing – không ai / không gì ⑧ Collocations & Paraphrase / Speaking – Writing B1 (2701–3000) ⸻ A. Collocations cơ bản B1 (2701–2750) 2701. make a decision – đưa ra quyết định 2702. take responsibility – chịu trách nhiệm 2703. have an effect on – ảnh hưởng đến 2704. play an important role – đóng vai trò quan trọng 2705. pay attention to – chú ý đến 2706. take part in – tham gia 2707. deal with – xử lý 2708. lead to – dẫn đến 2709. depend on – phụ thuộc vào 2710. contribute to – đóng góp cho 2711. solve a problem – giải quyết vấn đề 2712. improve skills – cải thiện kỹ năng 2713. achieve goals – đạt mục tiêu 2714. face challenges – đối mặt thử thách 2715. overcome difficulties – vượt khó khăn 2716. gain experience – tích lũy kinh nghiệm 2717. provide support – cung cấp hỗ trợ 2718. raise awareness – nâng cao nhận thức 2719. protect the environment – bảo vệ môi trường 2720. conserve energy – tiết kiệm năng lượng 2721. earn money – kiếm tiền 2722. spend time – dành thời gian 2723. reduce stress – giảm căng thẳng 2724. maintain balance – duy trì cân bằng 2725. save money – tiết kiệm tiền 2726. create opportunities – tạo cơ hội 2727. exchange ideas – trao đổi ý tưởng 2728. make progress – tiến bộ 2729. have an impact – có tác động 2730. build relationships – xây dựng mối quan hệ 2731. achieve success – đạt thành công 2732. improve health – cải thiện sức khỏe 2733. enhance knowledge – nâng cao kiến thức 2734. improve quality of life – nâng cao chất lượng sống 2735. protect wildlife – bảo vệ động vật hoang dã 2736. reduce pollution – giảm ô nhiễm 2737. contribute positively – đóng góp tích cực 2738. provide opportunities – cung cấp cơ hội 2739. solve environmental issues – giải quyết vấn đề môi trường 2740. take action – hành động 2741. improve communication – cải thiện giao tiếp 2742. develop creativity – phát triển sáng tạo 2743. strengthen skills – củng cố kỹ năng 2744. gain confidence – tăng sự tự tin 2745. manage time – quản lý thời gian 2746. support learning – hỗ trợ việc học 2747. share knowledge – chia sẻ kiến thức 2748. achieve objectives – đạt mục tiêu 2749. protect natural resources – bảo vệ tài nguyên thiên nhiên 2750. reduce risks – giảm rủi ro ⸻ B. Paraphrase hữu ích Writing B1 (2751–2800) 2751. a lot of → a large number of / a great deal of – nhiều 2752. many → numerous – nhiều 2753. few → a small number of – ít 2754. people → individuals – con người 2755. children → young people – trẻ em 2756. old people → the elderly – người già 2757. nowadays → these days – ngày nay 2758. in the future → in the long term – trong tương lai 2759. more and more → an increasing number of – ngày càng nhiều 2760. less and less → a decreasing amount of – ngày càng ít 2761. is important → plays a vital role – quan trọng 2762. leads to → results in – dẫn đến 2763. causes → brings about – gây ra 2764. helps → contributes to – giúp 2765. improves → enhances – cải thiện 2766. affects → has an impact on – ảnh hưởng 2767. solves → addresses – giải quyết 2768. shows → demonstrates – chỉ ra 2769. suggests → recommends – đề xuất 2770. says → states – nói 2771. I think → In my opinion – tôi nghĩ 2772. I believe → It is believed that – tôi tin rằng 2773. I agree → I share the view that – tôi đồng ý 2774. I disagree → I do not agree – tôi không đồng ý 2775. it is good → it is beneficial – tốt 2776. it is bad → it is harmful – có hại 2777. it is necessary → it is essential – cần thiết 2778. it is possible → it is feasible – khả thi 2779. it is important → it is crucial – quan trọng 2780. it is interesting → it is fascinating – thú vị ⸻ C. Speaking phrases / functional language (2781–2850) 2781. In my opinion – theo tôi 2782. From my point of view – từ góc nhìn của tôi 2783. I think that – tôi nghĩ rằng 2784. I agree with – tôi đồng ý với 2785. I disagree with – tôi không đồng ý với 2786. It depends on – tùy thuộc vào 2787. For example – ví dụ 2788. Such as – chẳng hạn 2789. In general – nhìn chung 2790. In daily life – trong đời sống hàng ngày 2791. On the one hand – một mặt 2792. On the other hand – mặt khác 2793. Firstly / Secondly / Finally – thứ nhất / thứ hai / cuối cùng 2794. As a result – do đó 2795. Therefore – vì vậy 2796. In conclusion – kết luận 2797. To sum up – tóm lại 2798. For this reason – vì lý do này 2799. It can be seen that – có thể thấy rằng 2800. One possible reason is that – một lý do có thể là ⸻ D. Collocations nâng cao / Writing Task 2 (2801–2900) 2801. bring benefits – mang lại lợi ích 2802. cause problems – gây vấn đề 2803. improve quality of life – nâng cao chất lượng cuộc sống 2804. take responsibility – chịu trách nhiệm 2805. play an important role – đóng vai trò quan trọng 2806. raise awareness – nâng cao nhận thức 2807. contribute to society – đóng góp cho xã hội 2808. provide opportunities – cung cấp cơ hội 2809. overcome challenges – vượt qua thử thách 2810. deal with issues – xử lý vấn đề 2811. achieve goals – đạt mục tiêu 2812. maintain balance – duy trì cân bằng 2813. improve skills – cải thiện kỹ năng 2814. strengthen knowledge – củng cố kiến thức 2815. develop abilities – phát triển năng lực 2816. encourage participation – khuyến khích tham gia 2817. support learning – hỗ trợ việc học 2818. protect the environment – bảo vệ môi trường 2819. reduce pollution – giảm ô nhiễm 2820. save energy – tiết kiệm năng lượng 2821. take action – hành động 2822. build relationships – xây dựng mối quan hệ 2823. gain experience – tích lũy kinh nghiệm 2824. create opportunities – tạo cơ hội 2825. enhance communication – cải thiện giao tiếp 2826. manage time effectively – quản lý thời gian hiệu quả 2827. participate actively – tham gia tích cực 2828. exchange ideas – trao đổi ý tưởng 2829. achieve success – đạt thành công 2830. face difficulties – đối mặt khó khăn 2831. deal with stress – xử lý căng thẳng 2832. live a healthy life – sống lành mạnh 2833. develop creativity – phát triển sáng tạo 2834. gain confidence – tăng sự tự tin 2835. improve academic performance – cải thiện kết quả học tập 2836. support teamwork – hỗ trợ làm việc nhóm 2837. reduce risks – giảm rủi ro 2838. encourage innovation – khuyến khích sáng tạo 2839. enhance problem-solving – nâng cao khả năng giải quyết vấn đề 2840. maintain discipline – duy trì kỷ luật 2841. promote education – thúc đẩy giáo dục 2842. protect wildlife – bảo vệ động vật hoang dã 2843. address social issues – giải quyết vấn đề xã hội 2844. promote equality – thúc đẩy bình đẳng 2845. encourage participation – khuyến khích tham gia 2846. reduce inequalities – giảm bất bình đẳng 2847. support sustainable development – hỗ trợ phát triển bền vững 2848. improve public services – cải thiện dịch vụ công 2849. provide healthcare – cung cấp chăm sóc y tế 2850. strengthen communities – củng cố cộng đồng ⸻ E. Tổng hợp final B1 phrases (2851–3000) 2851. it is widely believed that – người ta tin rằng 2852. there is no doubt that – không nghi ngờ gì rằng 2853. it can be seen that – có thể thấy rằng 2854. one possible reason is that – một lý do có thể là 2855. this leads to – điều này dẫn đến 2856. as a result – do đó 2857. for this reason – vì lý do này 2858. in conclusion – kết luận 2859. to sum up – tóm lại 2860. in my view – theo quan điểm của tôi 2861. according to research – theo nghiên cứu 2862. recent studies show that – các nghiên cứu gần đây cho thấy 2863. it is important to note – quan trọng lưu ý rằng 2864. experts suggest that – các chuyên gia đề xuất rằng 2865. it has been proven that – đã được chứng minh rằng 2866. generally speaking – nhìn chung 2867. on average – trung bình 2868. in comparison – so sánh 2869. in contrast – ngược lại 2870. as mentioned above – như đã đề cập 2871. I strongly believe – tôi tin chắc rằng 2872. it is essential to – cần thiết phải 2873. it is crucial to – cực kỳ quan trọng để 2874. it is necessary to – cần phải 2875. one should – người ta nên 2876. people must – mọi người phải 2877. we need to – chúng ta cần 2878. we should – chúng ta nên 2879. it is recommended to – được khuyến nghị làm 2880. it is advisable to – hợp lý làm 2881. for instance – ví dụ 2882. such as – chẳng hạn 2883. particularly – đặc biệt 2884. especially – đặc biệt là 2885. in addition – thêm vào đó 2886. moreover – hơn nữa 2887. furthermore – hơn nữa 2888. however – tuy nhiên 2889. although – mặc dù 2890. despite – mặc dù 2891. due to – bởi vì 2892. because of – vì 2893. as a result – kết quả là 2894. therefore – vì vậy 2895. consequently – do đó 2896. thus – do đó 2897. in order to – để 2898. so that – để mà 2899. with the aim of – với mục tiêu 2900. in the long term – về lâu dài

sein — είμαι ich bin du bist er/sie/es ist wir sind ihr seid sie/Sie sind ⸻ haben — έχω ich habe du hast er/sie/es hat wir haben ihr habt sie/Sie haben ⸻ werden — γίνομαι / θα ich werde du wirst er/sie/es wird wir werden ihr werdet sie/Sie werden ⸻ heißen — ονομάζομαι / λέγομαι ich heiße du heißt er/sie/es heißt wir heißen ihr heißt sie/Sie heißen ⸻ wohnen — μένω / κατοικώ ich wohne du wohnst er/sie/es wohnt wir wohnen ihr wohnt sie/Sie wohnen ⸻ machen — κάνω ich mache du machst er/sie/es macht wir machen ihr macht sie/Sie machen ⸻ gehen — πηγαίνω ich gehe du gehst er/sie/es geht wir gehen ihr geht sie/Sie gehen ⸻ kommen — έρχομαι ich komme du kommst er/sie/es kommt wir kommen ihr kommt sie/Sie kommen ⸻ fahren — πηγαίνω/ταξιδεύω με όχημα ich fahre du fährst er/sie/es fährt wir fahren ihr fahrt sie/Sie fahren ⸻ sprechen — μιλάω ich spreche du sprichst er/sie/es spricht wir sprechen ihr sprecht sie/Sie sprechen ⸻ essen — τρώω ich esse du isst er/sie/es isst wir essen ihr esst sie/Sie essen ⸻ trinken — πίνω ich trinke du trinkst er/sie/es trinkt wir trinken ihr trinkt sie/Sie trinken ⸻ schlafen — κοιμάμαι ich schlafe du schläfst er/sie/es schläft wir schlafen ihr schlaft sie/Sie schlafen ⸻ sehen — βλέπω ich sehe du siehst er/sie/es sieht wir sehen ihr seht sie/Sie sehen ⸻ lesen — διαβάζω ich lese du liest er/sie/es liest wir lesen ihr lest sie/Sie lesen ⸻ schreiben — γράφω ich schreibe du schreibst er/sie/es schreibt wir schreiben ihr schreibt sie/Sie schreiben ⸻ wissen — ξέρω (πληροφορία) ich weiß du weißt er/sie/es weiß wir wissen ihr wisst sie/Sie wissen ⸻ kennen — γνωρίζω (άτομο/μέρος) ich kenne du kennst er/sie/es kennt wir kennen ihr kennt sie/Sie kennen ⸻ können — μπορώ / έχω την ικανότητα ich kann du kannst er/sie/es kann wir können ihr könnt sie/Sie können ⸻ müssen — πρέπει ich muss du musst er/sie/es muss wir müssen ihr müsst sie/Sie müssen ⸻ wollen — θέλω ich will du willst er/sie/es will wir wollen ihr wollt sie/Sie wollen ⸻ sollen — πρέπει / υποτίθεται ότι ich soll du sollst er/sie/es soll wir sollen ihr sollt sie/Sie sollen ⸻ dürfen — επιτρέπεται ich darf du darfst er/sie/es darf wir dürfen ihr dürft sie/Sie dürfen ⸻ mögen — μου αρέσει ich mag du magst er/sie/es mag wir mögen ihr mögt sie/Sie mögen ⸻ möchten — θα ήθελα ich möchte du möchtest er/sie/es möchte wir möchten ihr möchtet sie/Sie möchten ⸻ geben — δίνω ich gebe du gibst er/sie/es gibt wir geben ihr gebt sie/Sie geben ⸻ nehmen — παίρνω ich nehme du nimmst er/sie/es nimmt wir nehmen ihr nehmt sie/Sie nehmen ⸻ finden — βρίσκω ich finde du findest er/sie/es findet wir finden ihr findet sie/Sie finden ⸻ bleiben — μένω / παραμένω ich bleibe du bleibst er/sie/es bleibt wir bleiben ihr bleibt sie/Sie bleiben ⸻ bringen — φέρνω ich bringe du bringst er/sie/es bringt wir bringen ihr bringt sie/Sie bringen ⸻ denken — σκέφτομαι ich denke du denkst er/sie/es denkt wir denken ihr denkt sie/Sie denken ⸻ glauben — πιστεύω ich glaube du glaubst er/sie/es glaubt wir glauben ihr glaubt sie/Sie glauben ⸻ fragen — ρωτάω ich frage du fragst er/sie/es fragt wir fragen ihr fragt sie/Sie fragen ⸻ antworten — απαντάω ich antworte du antwortest er/sie/es antwortet wir antworten ihr antwortet sie/Sie antworten ⸻ arbeiten — δουλεύω ich arbeite du arbeitest er/sie/es arbeitet wir arbeiten ihr arbeitet sie/Sie arbeiten ⸻ lernen — μαθαίνω / μελετάω ich lerne du lernst er/sie/es lernt wir lernen ihr lernt sie/Sie lernen ⸻ brauchen — χρειάζομαι ich brauche du brauchst er/sie/es braucht wir brauchen ihr braucht sie/Sie brauchen ⸻ suchen — ψάχνω / αναζητώ ich suche du suchst er/sie/es sucht wir suchen ihr sucht sie/Sie suchen ⸻ helfen — βοηθάω ich helfe du hilfst er/sie/es hilft wir helfen ihr helft sie/Sie helfen

Exam Review Chapters 1, 2, & 3. Chapter 1 The Science of Psychology Behavior: Everything, we do that can be directly observed. Behavioral approach: an approach to psychology emphasizing the scientific study of observable behavioral responses and their environmental determinants. Biological approach: an approach to psychology focusing on the body, especially the brain and nervous system. Case study or case history: an in-depth look at a single individual. Cognitive approach: an approach to psychology emphasizing the mental processes involved in knowing: how we direct our attention, perceive, remember, think, and solve problems. Control group: The participants in an experiment who are as much like the experimental group as possible and who are treated in every way like the experimental group except for a manipulated factor, the independent variable. Correlational research: research that examines the relationships between variables, whose purpose is to examine whether and how two variables change together. Critical thinking: The process of thinking deeply and actively, asking questions, and evaluating the evidence. Dependent variable: The outcome; the factor that can change in an experiment in response to changes in the independent variable. Double-blind experiment: An experimental design in which neither the experimenter nor the participants are aware of which participants are in the experimental group and which are in the control group until the results are calculated. Evolutionary approach: An approach to psychology centered on evolutionary ideas such as adaptation, reproduction, and natural selection as the basis for explaining specific human behaviors. Experiment: A carefully regulated procedure in which the researcher manipulates one or more variables that are believed to influence some other variable. Experimental group: The participants in an experiment who receive the drug or other treatment under study—that is, those who are exposed to the change that the independent variable represents. Functionalism: James’s approach to mental processes, emphasizing the functions and purposes of the mind and behavior in the individual’s adaptation to the environment. Humanistic approach: An approach to psychology emphasizing a person’s positive qualities, the capacity for positive growth, and the freedom to choose any destiny. Hypothesis: A testable prediction that derives logically from a theory. Independent variable: A manipulated experimental factor; the variable that the experimenter changes to see what its effects are. Longitudinal design: A special kind of systematic observation, used by correlational researchers, that involves obtaining measures of the variables of interest in multiple waves over time. Mental processes: The thoughts, feelings, and motives that people experience privately but that cannot be observed directly. Natural selection: Darwin’s principle of an evolutionary process in which organisms that are best adapted to their environment will survive and produce offspring. Naturalistic observation: The observation of behavior in a real-world setting. Placebo: In a drug study, a harmless substance that has no physiological effect, given to participants in a control group so that they are treated identically to the experimental group except for the active agent. Placebo effect: The situation where participants’ expectations, rather than the experimental treatment, produce an experimental outcome. Population: The entire group about which the researcher wants to draw conclusions. Psychoanalysis: techniques involves an analyst unlocking a person's unconscious conflicts by talking with the individual about his or her childhood memories, dreams, thoughts, and feelings. Psychodynamic approach: an approach to psychology emphasizing unconscious thought, the conflict between biological drives (such as the drive for sex) and society’s demands, and early childhood family experiences. Psychology: The scientific study of behavior and mental processes. Sample: The subset of the population chosen by the investigator for study. Sociocultural approach: an approach to psychology that examines the ways in which social and cultural environments influence behavior. Structuralism: Wundt’s approach to discovering the basic elements, or structures, of mental processes. Theory: A broad idea or set of closely related ideas that attempts to explain observations and to make predictions about future observations. Validity: The soundness of the conclusions that a researcher draws from an experiment. In the realm of testing, the extent to which a test measures what it is intended to measure. Variable: Anything that can change. Wilhelm Wundt is most often regarded the "founding father" of modern psychology. He was also the founder of structuralism. William James was the founder of functionalism. J. B. Watson and B. F. Skinner believed that psychology should focus on an organism's visible interactions with the environment—that is, behaviors. Ethical Guidelines developed by the American Psychological Association include: • informed consent. • confidentiality. • deception. • debriefing. Chapter 2 The Brain and Behavior Action potential: The brief wave of positive electrical charge that sweeps down the axon. Adrenal glands: glands at the top of each kidney that are responsible for regulating moods, energy level, and the ability to cope with stress. Amygdala: An almond-shaped structure within the base of the temporal lobe that is involved in the discrimination of objects that are necessary for the organism’s survival, such as appropriate food, mates, and social rivals. Association cortex: Sometimes called association areas, the region of the cerebral cortex that is the site of the highest intellectual functions, such as thinking and problem solving. Autonomic nervous system: The body system that takes messages to and from the body’s internal organs, monitoring such processes as breathing, heart rate, and digestion. Axon The part of the neuron that carries information away from the cell body toward other cells. Basal ganglia Large neuron clusters located above the thalamus and under the cerebral cortex that work with the cerebellum and the cerebral cortex to control and coordinate voluntary movements. Brain stem The stem like brain area that includes much of the hindbrain (excluding the cerebellum) and the midbrain; connects with the spinal cord at its lower end and then extends upward to encase the reticular formation in the midbrain. Cell body The part of the neuron that contains the nucleus, which directs the manufacture of substances that the neuron needs for growth and maintenance. Central nervous system (CNS): The brain and spinal cord. Cerebral cortex: Part of the forebrain, the outer layer of the brain, responsible for the most complex mental functions, such as thinking and planning. Chromosomes: In the human cell, threadlike structures that come in 23 pairs, one member of each pair originating from each parent, and that contain DNA. Corpus callosum: The large bundle of axons that connects the brain’s two hemispheres, responsible for relaying information between the two sides. Dendrites: Treelike fibers projecting from a neuron, which receive information and orient it toward the neuron’s cell body. Deoxyribonucleic acid (DNA): A complex molecule in the cell’s chromosomes that carries genetic information. Dominant-recessive genes principle: The principle that if one gene of a pair is dominant and one is recessive, the dominant gene overrides the recessive gene. A recessive gene exerts its influence only if both genes of a pair are recessive. Endocrine system: The body system consisting of a set of glands that regulate the activities of certain organs by releasing their chemical products into the bloodstream. Forebrain: The brain’s largest division and its most forward part. Frontal lobes: The portion of the cerebral cortex behind the forehead, involved in personality, intelligence, and the control of voluntary muscles. Genes: The units of hereditary information, consisting of short segments of chromosomes composed of DNA. Genotype: An individual’s genetic heritage; his or her actual genetic material. Glands: Organs or tissues in the body that create chemicals that control many bodily functions. Glial cells: The second of two types of cells in the nervous system; glial cells (also called glia) provide support, nutritional benefits, and other functions and keep neurons running smoothly. Hindbrain: Located at the skull’s rear, the lowest portion of the brain, consisting of the medulla, cerebellum, and pons. Hippocampus: The structure in the limbic system that has a special role in the storage of memories. Hormones: Chemical messengers that are produced by the endocrine glands and carried by the bloodstream to all parts of the body. Hypothalamus: A small forebrain structure, located just below the thalamus, that monitors three pleasurable activities—eating, drinking, and sex—as well as emotion, stress, and reward. Limbic system: A set of subcortical brain structures central to emotion, memory, and reward processing. Midbrain: Located between the hindbrain and forebrain, an area in which many nerve-fiber systems ascend and descend to connect the higher and lower portions of the brain; in particular, the midbrain relays information between the brain and the eyes and ears. Motor cortex: A region in the cerebral cortex, located just behind the frontal lobes, that processes information about voluntary movement. Myelin sheath: A layer of fat cells that encases and insulates most axons. Neocortex: The outermost part of the cerebral cortex, making up 80 percent of the human brain’s cortex. Nervous system: The body’s electrochemical communication circuitry. Neural networks: Networks of nerve cells that integrate sensory input and motor output. Neurons: One of two types of cells in the nervous system; neurons are the nerve cells that handle the information-processing function. Neurotransmitters: Chemical substances that are stored in very tiny sacs within the neuron’s terminal buttons and involved in transmitting information across a synaptic gap to the next neuron. Occipital lobes: Structures located at the back of the head that respond to visual stimuli. Ovaries: Sex-related endocrine glands that produce hormones involved in women’s sexual development and reproduction. Pancreas: A dual-purpose gland under the stomach that performs both digestive and endocrine functions. Parasympathetic nervous system: The part of the autonomic nervous system that calms the body. Parietal lobes: Structures at the top and toward the rear of the head that are involved in registering spatial location, attention, and motor control. Peripheral nervous system (PNS): The network of nerves that connects the brain and spinal cord to other parts of the body. Phenotype: An individual’s observable characteristics. Pituitary gland: A pea-sized gland just beneath the hypothalamus that controls growth and regulates other glands. Plasticity: The brain’s special capacity for change. Prefrontal cortex: an important part of the frontal lobes that is involved in higher cognitive functions such as planning, reasoning, and self-control. Resting potential, The stable, negative charge of an inactive neuron. Reticular formation: A system in the midbrain comprising a diffuse collection of neurons involved in stereotyped patterns of behavior such as walking, sleeping, and turning to attend to a sudden noise. Somatic nervous system: The body system consisting of the sensory nerves, whose function is to convey information from the skin and muscles to the central nervous system about conditions such as pain and temperature, and the motor nerves, whose function is to tell muscles what to do. Somatosensory cortex: A region in the cerebral cortex that processes information about body sensations, located at the front of the parietal lobes. Stem cells: Unique primitive cells that have the capacity to develop into most types of human cells. Stress: The responses of individuals to environmental stressors. Stressors: Circumstances and events that threaten individuals and tax their coping abilities and that cause physiological changes to ready the body to handle the assault of stress. Sympathetic nervous system: The part of the autonomic nervous system that arouses the body to mobilize it for action and thus is involved in the experience of stress. Synapses: Tiny spaces between neurons; the gaps between neurons are referred to as synaptic gaps. Temporal lobes: Structures in the cerebral cortex that are located just above the ears and are involved in hearing, language processing, and memory. Testes: Sex-related endocrine glands in the scrotum that produce hormones involved in men’s sexual development and reproduction. Thalamus: The forebrain structure that sits at the top of the brain stem in the brain’s central core and serves as an important relay station. Left Hemisphere • verbal processing, speech, grammar Right Hemisphere • spatial perception • visual recognition • emotion Chapter 3 Sensation and Perception Absolute threshold: The minimum amount of stimulus energy that a person can detect. Apparent movement: The perception that a stationary object is moving. Auditory nerve: The nerve structure that receives information about sound from the hair cells of the inner ear and carries these neural impulses to the brain’s auditory areas. Binding: In the sense of vision, the bringing together and integration of what is processed by different neural pathways or cells. Binocular cues: Depth cues that depend on the combination of the images in the left and right eyes and on the way the two eyes work together. Bottom-up processing: The operation in sensation and perception in which sensory receptors register information about the external environment and send it up to the brain for interpretation. Cones: The receptor cells in the retina that allow for color perception. Convergence: A binocular cue to depth and distance in which the muscle movements in an individual’s two eyes provide information about how deep and/or far away something is. Depth perception: The ability to perceive objects three-dimensionally. Difference threshold: The degree of difference that must exist between two stimuli before the difference is detected. Feature detectors: Neurons in the brain’s visual system that respond to particular features of a stimulus. Figure-ground relationship: The principle by which we organize the perceptual field into stimuli that stand out (figure) and those that are left over (ground). Frequency theory: Theory on how the inner ear registers the frequency of sound, stating that the perception of a sound’s frequency depends on how often the auditory nerve fires. Gestalt psychology A school of thought interested in how people naturally organize their perceptions according to certain patterns. Inner ear: The part of the ear that includes the oval window, cochlea, and basilar membrane and whose function is to convert sound waves into neural impulses and send them to the brain. Kinesthetic senses: Senses that provide information about movement, posture, and orientation. Middle ear: The part of the ear that channels and amplifies sound through the eardrum, hammer, anvil, and stirrup to the inner ear. Monocular cues: Powerful depth cues available from the image in one eye, either the right or the left. Noise: Irrelevant and competing stimuli—not only sounds but also any distracting stimuli for the senses. Olfactory epithelium: The lining of the roof of the nasal cavity, containing a sheet of receptor cells for smell. Opponent-process theory: Theory stating that cells in the visual system respond to complementary pairs of red-green and blue-yellow colors; a given cell might be excited by red and inhibited by green, whereas another cell might be excited by yellow and inhibited by blue. Optic nerve: The structure at the back of the eye, made up of axons of the ganglion cells, that carries visual information to the brain for further processing. Outer ear: The outermost part of the ear, consisting of the pinna and the external auditory canal. Pain: The sensation that warns an individual of damage to the body. Papillae: Rounded bumps above the tongue’s surface that contain the taste buds, the receptors for taste. parallel processing: The simultaneous distribution of information across different neural pathways. Perception: The process of organizing and interpreting sensory information so that it makes sense. perceptual constancy: The recognition that objects are constant and unchanging even though sensory input about them is changing. perceptual set A predisposition or readiness to perceive something in a particular way. place theory: Theory on how the inner ear registers the frequency of sound, stating that each frequency produces vibrations at a particular spot on the basilar membrane. retina The multilayered light-sensitive surface in the eye that records electromagnetic energy and converts it to neural impulses for processing in the brain. Rods: The receptor cells in the retina that are sensitive to light but not very useful for color vision. selective attention: The act of focusing on a specific aspect of experience while ignoring others. semicircular canals: Three fluid-filled circular tubes in the inner ear containing the sensory receptors that detect head motion caused when an individual tilts or moves the head and/or the body. Sensation: The process of receiving stimulus energies from the external environment and transforming those energies into neural energy. sensory adaptation: A change in the responsiveness of the sensory system based on the average level of surrounding stimulation. sensory receptors: Specialized cells that detect stimulus information and transmit it to sensory (afferent) nerves and the brain. signal detection theory: An approach to perception that focuses on decision making about stimuli in the presence of uncertainty. subliminal perception The detection of information below the level of conscious awareness. Thermoreceptors: Sensory nerve endings under the skin that respond to changes in temperature at or near the skin and provide input to keep the body’s temperature at 98.6 degrees Fahrenheit. top-down processing The operation in sensation and perception, launched by cognitive processing at the brain’s higher levels, that allows the organism to sense what is happening and to apply that framework to information from the world. trichromatic theory: Theory stating that color perception is produced by three types of cone receptors in the retina that are particularly sensitive to different, but overlapping, ranges of wavelengths. vestibular sense: Sense that provides information about balance and movement. visual cortex: Located in the occipital lobe, the part of the cerebral cortex involved in vision. volley principle: Principle addressing limitations of the frequency theory of hearing, stating that a cluster of nerve cells can fire neural impulses in rapid succession, producing a volley of impulses. Weber’s law: The principle that two stimuli must differ by a constant minimum percentage (rather than a constant amount) to be perceived as different.

Tinntjønn spansk 8.trinn kapittel 2

[Music] [Music] this is the story of the greatest scientific discovery ever the discovery that everything is made of atoms the vast variety and richness of everything we see around us in the world and beyond how it's built up how it all fits together is all down to atoms and the mysterious laws they obey as scientists delve deep into the atom it's the very part of matter they unraveled nature's most shocking secrets they had to abandon everything they believed in and create a whole new science a science that today underpins the whole of physics chemistry biology and maybe even life itself but for me the story of how humanity solved the mystery of the atom is both inspiring and remarkable it's a story of great geniuses of men and women driven by their thirst for knowledge and glory it's a story of false starts and conflicts of ambition and revelation a story that leads us through some of the most exciting and exhilarating ideas ever conceived of by the human race and for a working physicist like me it's the most important story there is [Music] [Music] on the 5th of October 1906 in a hotel room near Trieste a German science is called Ludwig Boltzmann hanged himself Boltzmann had a long history of psychological problems and one of the key factors in his depression was that he'd been vilified even ostracized for believing something that today we take for granted he believed that matter cannot be infinitely divisible into ever smaller pieces instead he argued that ultimately everything is made of basic building blocks atoms it seems incredible now that Boltzmann's revelation was so controversial but a hundred years ago arguing atoms were real was considered by most to be a waste of time although philosophers since the Greeks had speculated that the world might be made out of some kind of basic unit of matter they realized that they were far too small to see even under the most powerful microscopes speculating about them was therefore a complete waste of time but then in the middle of the 19th century whether or not the atom was real was suddenly a question of burning importance the reason was this steam by the 1850s it was changing the world it powered the mighty engines the trains the ships the factories of the Industrial Revolution so figuring out how to use it more effectively became a matter of crucial commercial political and military significance not surprisingly then it became the key question of 1965 [Music] the demand to build more powerful and efficient steam engines in turn created an urgent need to understand and predict the behavior of water and steam at high temperatures and pressures not the alts Minh and his scientific allies showed that if you imagine steam is made of millions of tiny rigid spheres atoms then you can create some powerful mathematical equations and those equations are capable of predicting the behavior esteemed with incredible accuracy but these same equations plunge Boltzmann and his fellow atomists into controversy their enemies argued that since the atoms referred to in their calculations were invisible they were merely a mathematical convenience rather than real physical objects to claim that imaginary entities were real seem presumptuous even blasphemous you see boss most critics argued that it was sacrilegious to reduce God's miraculous creation down to a series of collisions between tiny inanimate spheres Boltzmann was condemned as an irreligious materialist the tragic irony of Boltzmann's story is that when he took his own life in 1906 he was unaware that he'd been vindicated you see a year before he died a young scientist had published a paper which undeniably irrefutable proclaimed the reality of the atom you might have heard of this young scientist his name was Albert Einstein in 1905 the year before Boltzmann suicide Albert Einstein was 26 years old his brash arrogance had upset most of his professors and teachers and he was barely employable then he got his girlfriend pregnant that was followed by a hasty marriage he needed a job any job having not quite distinguished himself a university he took up a job as a patent clerk here in bern in switzerland he'd moved into the small one-bedroom Apartments on cram gasser with his young wife from a laborer despite dire personal straits the young Einstein had a burning ambition he was desperate to make his mark as a physicist and in 1905 during one miraculous year the mark he made was truly incredible having an undemanding job meant that young einstein had plenty of time on his hands both at work and here in his tiny apartment to think deep thoughts in the space of just a few months he was to publish several papers that would change science forever now everyone's heard of his theory of relativity even if they don't understand it and his paper on the nature of light was to win him the Nobel Prize a few years later but ironically it wasn't either of these two papers that had the most impact on the discovery of atoms the one that made all the difference was a short paper on how tiny grains of pollen danced in water almost 80 years earlier in 1827 a Scottish botanist called Robert Brown sprinkled pollen grains in some water and examined it through a microscope what he found was really strange because instead of the pollen grains floating gently in the water they danced around furiously almost as though they were alive now while this so called Brownian motion was strange scientists soon forgot about it they found it mundane even boring I mean who cared if the pollen giggled about in the water and what had the jiggling to do with atoms anyway for nearly 80 years brown's discovery remained a little-known scientific anomaly then Einstein changed everything in one staggering insight I Stein saw that Brownian motion was all about atoms in fact he realized that the jiggling of pollen grains in water could settle the raging debate about the reality of atoms forever his argument was simple the pollen will only jiggle if they were being jostled by something else so I said that the water must be made of tiny atoms like particles which themselves are jiggling and are continually buffeting the pollen if there were no atoms then the pollen would stay still so Boltzmann and his contemporaries had been rowing furiously about this question for nothing the answer was there all along Einstein proved that for Brownian motion to happen atoms must exist Einstein später went way beyond just verbal arguments with flawless mathematics he proved that the dance of the pollen revealed the size of the atom and it's mind-numbing ly tiny 1/10 of a millionth of a millimeter across a single human hair itself one of the narrowest things visible to the naked eye is over a million atoms wide let me put it another way there are more atoms in a single glass of water than there are glasses of water in all the oceans of the world sort of hurts your head just to think about it Einstein's paper ended the debate about whether the atom was real or not and Boltzmann had been totally vindicated the atom had to be real [Music] [Music] by the early years of the 20th century the atom had arrived scientists we'd argued that the atom was real were no longer heretics in a dramatic sudden reversal they became the new orthodoxy but they were to pay a huge price for their success before that even had a chance to congratulate each other on discovering the atom it ripped the rug out from under their feet and sent them spiraling into a bizarre and at times terrifying new world and it all kicked off here in what by 1910 was the world center for atomic physics Manchester two of the most extraordinary men in the history of science worked here in the physics departments of Manchester University between 1911 and 1916 they were Ernest Rutherford and Niels Bohr on the face of it two very different personalities and the unlikeliest of collaborators Rutherford was from a remote part of New Zealand and grew up on a farm Bohr was born in Copenhagen wealthy and erudite virtually an aristocrat Rutherford was the ultimate experimentalist he loved technology and ingenious arrangements of batteries coils magnets and radioactive rocks but he was also blessed with a profound intuition in contrast war was the ultimate theoretician to him science was about deep thought and abstract mathematics pen and paper chalk and blackboard were his tools logic was his path to truth although their approaches to their work couldn't have been any more different they had one thing in common they were prepared to ditch three centuries of scientific convention if it didn't fit what they believed to be true they were genuine revolutionaries Rutherford and Bohr were two of the most extraordinary minds ever produced by the human race but it would take every bit of their dogged tenacity and inspirational brilliance to take on the atom in 1907 ernest rutherford took over the physics departments in manchester this was a period of momentous scientific change just over ten years earlier in germany came the first demonstration of weird rays that see through flesh to reveal our bones these rays were so inexplicable scientists didn't know what to call them so they were named x-rays and a couple of years after that in Cambridge it was shown that powerful electric currents could produce strange streams of tiny glowing charged particles that were called electrons and in 1896 in Paris came the most significant discovery of all one that more than any other would unlock the secrets of the atom the metal uranium was shown to emit a strange and powerful energy that was named radioactivity it seemed straight out of science fiction radioactive metals were warm to touch they could even burn the skin and the rays could pass through solid matter as if it wasn't there it truly was a marvel of the modern age Rutherford was obsessed with radioactivity all sorts of questions plagued him how has it made why did it come in different forms how far could it travel through a vacuum or through air did it alter the materials that are encountered in Manchester together with his assistants hands Geiger of Geiger counter fame and Ernest Marsden he devised a series of experiments that would probe the Enigma of radioactivity 1909 Manchester University these are the props goldleaf Beaton said it's just a few atoms thick a movable phosphorescent screen that flashed when struck by radioactive rays and inside this box is the star attraction a tiny piece of the metal radium radium is an extraordinarily powerful source of a kind of radioactivity the Rutherford had named alpha rays they weren't really rays they were more like a steady stream of particles and radium spat up these particles like a machine gun that never ran out of bullets Rutherford set his students a simple enough task use the radium gun shoot the alpha radioactivity at the gold leaf and with the phosphorescent plate count the number of particles that come out the other side in practice that meant sitting alone in the dark and counting tiny almost invisible flashes on the phosphorescent screen it was deeply tedious but Rutherford insisted that they keep at it weeks passed and the team of researchers found nothing unusual the alpha particles seemed to punch through the gold almost as though it wasn't there very occasionally they would swerve slightly as they went through hardly front-page news now comes what must be the most consequential off-the-cuff remark in the history of science one that changed the world the story goes that Rutherford bumps into his assistant Geiger in the corridor outside the lab Geiger reported that so far they've seen nothing unusual now in response Rutherford could have easily just nodded and walked on but he didn't he later claimed that he said what he said at the time for the sheer hell of it but I don't believe him Rutherford had great scientific intuition and I think he had a hunch that something was about to happen here's what he said to Geiger tell young Marsden to go back and see if he can detect any alpha particles on the same side of the gold leaf as the radium source in other words see if any alpha particles are bouncing back now it's an extraordinary suggestion from Rutherford and one day he had no logical reason to make after all Geiger Marsden had spent weeks seeing alpha particles do nothing but streams straight through the gold leaf almost as though it wasn't there why would any bounce back the Geiger Marsden were young and in all the big New Zealand er they did their master's bidding and went back into their dark lab and watched patiently for days they saw absolutely nothing they strained their eyes to the points of myopia but didn't see a single alpha particle bouncing back off the gold it seemed that rather for suggestion really was a stupid one but then the impossible happened one afternoon in 1909 Geiger burst into Rutherford's office with some astonishing news very very occasionally an alpha particle would indeed ricochet back off the gold leaf Geiger calculated that only 1 in 8,000 alpha particles would do this it's a tiny percentage but Rutherford's mind reeled with the news he would later say it was like firing a shell at a piece of tissue paper and have it bounce back at you there and then Rutherford knew he'd struck physics cold although it would take him over a year to fully understand why the alpha particles would do this when he did he would show humanity for the first time the inside of an atom now people had barely got used to the idea that atoms existed but now Rutherford knew that this my new world 1/10 of a millionth of a millimetre across had his own internal structure within the atomic there's a sub atomic world and Ernest Rutherford believed he knew what it looked like Rutherford realized that the bouncing alpha particle revealed an atom that was totally unexpected it had no familiar analogy on earth so Rutherford looked for one in the heavens he pictured the atom as a tiny solar system electrons tiny particles of negative electricity orbit around a minut positively charged object called the nucleus [Music] Rutherford calculated that the nucleus was 10,000 times smaller than the atom itself that's why only 1 in 8,000 alpha particles bounce back they're the ones that hit the Tony nucleus by chance the rest whizzed by without hitting anything the first astonishing consequence of this idea is that Rutherford's atom is almost entirely empty space that's why nearly all the alpha particles race through the gold atoms as if there's nothing there there really is nothing there consider the bizarre implications of Rutherford's atom by imagining it on a bigger scale if the nucleus were the size of a football then the nearest electron will be an orbit half a mile away the rest of the atom will be completely empty space let me explain another way if you were to suck out all the empty space from every atom in my body then I would shrink down to a size smaller than a grain of salt of course I'd still weigh the same and if you did the same thing to the entire human race then all 6 billion of us would fit inside a single Apple the atom was unlike anything we had ever encountered before and it would only get stranger and stranger almost immediately a problem surfaced and it was a big one according to the tried and trusted science of the time the electrons should lose their energy run out of speed and spiral into the nucleus in less than a blink of an eye Rutherford's atom contradicted the known laws of science the atom didn't care that it defied scientific convention it's almost entirely empty space and it's gonna stay that way I show no signs of shrinking down to the size of a grain of salt and the earth is well the size of the earth it's not getting smaller not surprisingly all the established scientists of the day including Einstein were battled scientific ideas they put their faith in all their lives had failed completely to explain the atom the atom now required a new generation of scientists to follow in Rutherford's footsteps bold brilliant and above all young it was crucial they had no loyalty or attachment to ideas held by previous generations one of the first of this new breed was niels bohr he sailed from Denmark in 1911 and made his way it's English soil having finished his studies in Copenhagen war decided to move abroad and be at the center of the new physics the trail led you to britain manchester university ernest rutherford or made it his mission to solve the puzzles of why the atom didn't collapse and why there was so much empty space as one of the new breed of theoretical physicists he was fearless in his thinking and was prepared to abandon common sense and human intuition to find an explanation so in a leap of genius he started to look for clues about the atoms structure not by looking at matter but by examining the mysterious and wonderful nature of light our atoms and lights are clearly connected most substances glow when they're heated and for centuries people had realized that different substances glow with their own distinctive colors a bit like a signature so the green of copper the yellow of sodium and the red of lithium these colors associated with different substances are called spectra and Bohr's great insights was to realize that spectra are telling us something about the inner structure of the atom that they could explain all that empty space Bohr's idea was to take Rutherford's solar system model of the atom and replace it with something that's almost impossible to imagine or visualize so sensible ideas like empty space and particles moving around in orbits fade away and they're replaced with something that is one of the most misunderstood and misused concepts in the whole of science the quantum jump now it takes most working physicists many years to come to terms with quantum jumps and in fact or himself said that if you think you've understood it then you haven't really thought about it enough so I'm going to take a deep breath and under 30 seconds try and explain to you one of the most complicated concepts in the whole of science but one that underpins the entire universe Bohr described the atom not as a solar system but as a multi-story building the ground floors where the nucleus lives were the electrons occupying the floors above mysterious laws mean the electrons can only live on the floors never in between and other mysterious laws mean that sometimes that can instantaneously jump from one film to another these are what we call quantum jumps now Bohr had absolutely no idea what these laws were but thinking like this allowed him to make a startling prediction when an electron jumps from a higher floor to a lower one it gives off light more significantly the color of the light depends on how big or small the quantum jump the electron makes so an electron jumping from the third floor to the second floor might give off red light when an electron jumping from the tenth floor to the second floor blue light to test his new theory Bohr used it to make a prediction could it explain the mysterious signature in the spectrum of hydrogen after months of calculating furiously who finally came up with the results and his prediction was surprisingly accurate for the first time ever it looked like the spectrum can be explained back in 1913 that was big news but Bohr's new idea rested on a single seriously controversial supposition why should the electrons in the atom behave as though they were in a multi-story building and why should they magically perform quantum jumps from one story to another there was no precedent for it anywhere else in science when one physicists claimed the jumps were nonsense Moore replied yes you're completely right but that doesn't prove the jumps don't happen only that you cannot visualize them but not being able to visualize things seem to go against the whole purpose of science all the scientists in particular felt that science was supposed to be about understanding the world not about making up arbitrary rules that seemed to fit the data conflict between the two generations of scientists was inevitable cause weird new Adam and his crazy quantum jumps were a shot across the bow silence and the old school reacted and leading the traditionalists was giant of the physics world Albert Einstein he hated all his ideas and he was going to fight them anything from a sexual assault on Nats [Music] borther is undeterred and as the 1920s gone the battery needs for one of the greatest conflicts in all science Woodlawn so far the debates about the new atomic physics had been polite from gentlemen now the two sides wheeled out their biggest guns two of the greatest names in physics they were two very true trusting characters on those dicho for the new revolutionary science was a buttoned-up uber competitive German called Verner Heisenberg for the Conservatives as a debonair byron esque Austrian called Owen Schrodinger [Music] [Applause] Oh in Schrodinger passionate and poetic a philosopher and a romantic he wrote books on the ancient Greeks on philosophy on religion he was influenced by Hinduism there's also a very flamboyant character cool suave sophisticated a dapper dresser and a big hit with the ladies [Music] [Applause] schrödinger's promiscuity was legendary he had a string of girlfriends throughout his married life some of them much younger than him in 1925 38 year-old Schrodinger stayed at the Alpine resort of yoson Switzerland for a secret liaison with an old girlfriend whose identity remains a mystery to this day but their passion proved to be the catalyst but Schrodinger's creative genius another physicist said of Schrodinger's week of sexually inspired physics he had two tasks that week satisfy a woman and solved the riddle of the atom fortunately he was up to both he took de Bru's idea of mysterious pilot waves guiding electrons around an atom one crucial step further he argued that the electron actually was a wave of energy vibrating so fast it looked like a cloud around the atom a cloud like wave of pure energy and what's more he came up with a powerful new equation which completely described this way and so described the whole atom in terms of traditional physics the equation he came up with we now call schrödinger's wave equation it's incredibly powerful what's unique about it is that it features a new quantity called the wave function which Schrodinger claimed completely describe the behavior on the subatomic world [Music] Schrodinger's equation and the picture of the Atome painted created during a sexually charged holiday in the Swiss Alps once again allowed scientists to visualize the atom in simple terms it's hard to overestimate the relief Schrodinger's idea brought to the traditional physics community strange though his picture of the Aten was at least it was a picture and scientists love pictures they allowed them to use their intuition but there was still a deep nagging problem one that the radicals felt Schrodinger just couldn't reconcile his new theory still couldn't account for balls strange instantaneous quantum jumps the time had come for the radicals to hit back [Applause] in the summer of the same year one of Niels Bohr's protegees Verner Heisenberg was travelling to an obscure island of the north coast of Germany he was fiercely competitive and took Schrodinger's ideas as a personal affront he felt strongly that the strangeness of the instant quantum jumps was actually the key to understanding the atom he thought the atom was so unique and unusual it shouldn't be compromised through a simple analogy like a wave or an orbit or even a multi-story building he believed it was time to give up any picture of the atom at all Verner Heisenberg while the true geniuses of the 20th century young athletic a great mountain climber an excellent pianist he was also an exceptional student at the age of just 20 who was well on his way to finishing his ph.d and being courted by the great universities across Europe now in the summer of 1925 he was suffering from a particularly bad bout of hay fever his face was swollen up almost beyond recognition he decided to escape alone here to this beautiful but isolated island of helgeland he walked along the beaches he swam he climbed the rock and he pondered ever since he'd encountered atomic physics Heisenberg felt in his bones that all human attempts to visualize the atom to model it with familiar images would always fail the atom he believed was too capricious too strange to ever be explained that simply so he decided to abandon all pictures of it and describe it using pure mathematics alone but as he pondered he realized that the atom didn't just defy visualization it even defied traditional mathematics it was while he was here on helgeland the Heisenberg had an incredible revelation he realized that in order to describe certain properties of atoms he had to use a strange new type of mathematics it seems that certain properties like where an electron is at a given time and how fast it's moving where multiplied together the order in which you multiply there matters let me try and explain if we multiply two numbers together it doesn't matter which or do we do it in so 3 times 4 is clearly the same as 4 times 3 but when it came to atoms Heisenberg realized that the order in which he multiplied quantities together gave a different answer this quickly led him to other discoveries and he was convinced that he'd cracked a code in the atom that he'd somehow found the hidden mathematics within he was so excited he was also very scared that night he climbed to the top of a rock and sat there waiting till dawn he called it his night of helgeland when he returned to his University in getting and he told his colleague Max Born about it and they then worked together intensely for several months developing a whole new theory of the atom a theory that today we call matrix mechanics [Music] matrix mechanics uses complex arrays of numbers rather like a spreadsheet by manipulating these arrays Heisenberg and his mentor the brilliant physicist max all could accurately predict atomic behavior but from Einstein and the traditionalists this was pure scientific heresy an atom can't actually be a matrix of numbers surely we made of atoms not numbers back in Copenhagen Bohr and Paulie were thrilled with matrix mechanics so what if we couldn't imagine the atom as a physical object they exalted in the purity of the mathematics and launched into vicious attacks against Schrodinger's vulgar sensual waves Heisenberg wrote the more I reflect on the physical portion of Schrodinger's equation the more disgusting I find it in fact it's just [ __ ] but Schrodinger was equally scathing of Heisenberg saying he was repelled by his methods and found his mathematics monstrous in Munich in 1926 their enmity began to reach boiling points Schrodinger was to give a lecture on his wave equation Heisenberg scraped together the money to travel down to Munich for the lecture to finally come face to face with his rival what was at stake was more than just Heisenberg's reputation he believed Schrodinger's simplistic approach wasn't just misguided but totally wrong and his intention was nothing less than to destroy Schrodinger's theory Schrodinger delivers his lecture on the new wave mechanics to a packed audience the standing-room-only he writes down his new wave equation to Schrodinger this describes a real physical picture of the atom with electrons as waves surrounding the atomic nucleus 24-year old Verna Heisenberg is in the audience it can hardly contain himself at the end of the lecture he stands up and delivers a monologue attacking Schrodinger's approach for Heisenberg it's impossible to ever have a picture of what the atom is really like the audience is on Schrodinger side they'd much prefer his simple physical interpretation to Heisenberg's abstract complicated mathematics Heisenberg is booed he's told to sit down and be quiet he leaves the lecture sad and depressed Heisenberg returned to Copenhagen with his confidence severely dented there at the Institute he and Bohr reached their darkest moment almost all of the scientific community was against them they felt isolated desperate their backs were against the wall despite this they stubbornly refused to give up their controversial theory this attic room was Heisenberg study back in 1926 Bohr would come up here night after night we're here in Heisenberg would argue about the meaning of the new quantum mechanics they would argue so passionately but on one occasion apparently Heisenberg was reduced to tears and then as Heisenberg stared out of his attic window in despair the part below an extraordinary thought occurred to him it struck him why an atom can't be visualized why can't be understood intuitively it's not just because it's tiny tricky and difficult is because it's inherently unknowable he realized that there was a fundamental limit to how much we can know about the subatomic world for instance if we know where an electron is at a particular moment in time then we cannot know how fast it's moving but if we knew its speed we wouldn't know his position this ambiguity isn't a shortcoming in the theory itself nor was it due to the clumsiness of the way we carry out our measurements but a fundamental truth about the way nature behaves at the subatomic scale it became known as Heisenberg's uncertainty principle and is probably the most profound incredible yet unsettling concepts in the whole of science [Music] what Heisenberg had uncovered through his abstract matrix mechanics was a deep and shocking truth about the atomic world atoms are willfully obscure we can never fully know an atoms position and speed simultaneously the atomic world just refuses to allow that to happen it was completely mind-boggling but once they accepted it Heisenberg and Bohr who found the boost of confidence to be even more bold they realized uncertainty forced them to put a paradox right at the very heart of the atom atoms are not just unimaginable they're self-contradictory they behave both like particles and waves and it gets weirder when you're not looking at an atom it behaved like a spread-out wave but when you look to see where it is it behaves like a particle this is insane first atoms couldn't be visualized at all now it seems they change completely in character depending on whether or not you're looking at them the uncertainty principle had changed everything it revealed a shocking contradiction at the heart of nature everything we see is made of atoms and yet atoms themselves are unknowable they can only be understood through mathematics for the first time for Bohr and Heisenberg everything about the atom fell into place by the autumn of 1927 full of confidence and smarting for a fight they knew they were finally ready to take on the Conservatives [Music] for this physics showdown they chose the Solvay conference in Brussels all the world's leading atomic physicists would attend if war and Heisenberg was successful then they would lead a total scientific revolution this is amazing I'm looking at original footage of the Solvay delegates coming out of these doors there's Bohr talking to Schrodinger and and this Heisenberg behind them and there's Paolo Li strange looking guy on there's Einstein coming down with a big smile on his face for the week of the conference all that the delegates could think and talk about was Bohr's quantum mechanics with uncertainty now a central plank it was a truly formidable theory and over the week the final showdown played out between Bohr and his archrival Albert Einstein Einstein hated quantum mechanics and every morning he'd come to war with an argument that he felt picked a hole in the new theory war would go away very disturbed and think very hard about it and by the end of the day he'd come back with a counter argument that dismissed Einstein's criticism and this happened day after day until by the end of the conference Bohr had brushed aside all of Einstein's criticisms and Bohr was regarded as having been victorious and with that his vision play-actor which became known as the Copenhagen interpretation was suddenly at the very heart of atomic physics at the end of the conference they all gather for the team photo never before or since have so many great names of physics being together in one place at the front the elder statesmen of physics Hendrik Lorentz flanked on either side by Madame Curie and Albert Einstein Einsteins looking rather glum because he's lost the argument Louis debris has also failed to convince the delegates of his views victory goes to Niels Bohr he's feeling very pleased with himself next to him one of the unsung heroes of quantum mechanics the German Max Born who developed so much of the mathematics and behind them the two young disciples of Bohr Heisenberg and Pauli Poly's looking rather smugly across at Schrodinger bit like the cat who's got the milk this was the moment in physics when it all changed the old guard was replaced by the new chance of probability became interwoven into the fabric of nature itself and we could no longer describe atoms in terms of simple pictures but only using pure abstract mathematics the Copenhagen view had been victorious although Einstein went to his grave never believed in quantum mechanics solve a 1927 was the turning point at which the rest of the science establishments came to embrace the Copenhagen interpretation and that interpretation is still accepted today all the physics that I use in my research certainly the quantum mechanics that I teach my students and that fills the textbooks on my shelves is based on ideas that were hammered out and crystallized here at the Solvay conference in October 1927 in a sense everything I know about the way the world around me is made up started here the quantum mechanical description of the atom is one of the crowning glories of human creativity over the last of 18 years it has been proven right time after time and it's Authority has never been in doubt it's a monumental scientific achievement between 1905 and 1927 science changed our view of the world it also changed our view of science itself as scientists probed the tiniest building blocks of matter they created the most successful and powerful theory ever quantum mechanics it allows us to describe what everything in the universe is made of how it interacts and how it all fits together but it comes at a huge price at its most fundamental level we have to accept that nature is ruled by chance and probability Heisenberg's uncertainty principle dictates that there are certain limits on the sorts of questions we can ask the atomic world and most crucially while we now know so much more about what an atom is and how it behaves we have to give up any possibility of imagining what it looks like our human nature has forced us to ask questions of everything we see around us in the world what we've discovered has been beyond our wildest imagination [Music]

Trin's Precautions Remediation

Human Anatomy and Physiology Third Edition Chapter 1 Introduction to Anatomy and Physiology Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Characteristics of Living Organisms (1 of 2) Living Organisms share distinct properties •Cellular Composition—Cells are the smallest units that carry out the functions of life •Metabolism—Living organisms carry out chemical processes collectively called metabolism –“Building” processes are known as Anabolism –“Breaking down” processes are known as Catabolism •Growth—An increase in the size and/or number of cells Loading… Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Characteristics of Living Organisms (2 of 2) Living Organisms share distinct properties (continued) •Excretion—Elimination of potentially harmful waste products created by metabolic processes •Responsiveness or Irritability—Organisms sense and react to changes or stimuli in their environment •Movement—Organisms or individual cells of an organism move •Reproduction—Production of new cells during growth or repair or reproduction of new organisms Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Levels of Structural Organization and Body Systems (1 of 7) The body is constructed of a series of progressively larger “building blocks” known as the Structural Levels of Organization •Chemical Level—This is the smallest level; Chemicals range from tiny atoms to complex molecules •Cellular Level—Groups of many different types of molecules combine in specific ways to form cellular structures •Tissue Level—Two or more cell types and material outside them, called extracellular matrix, combine to perform a common function Loading… Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Levels of Structural Organization and Body Systems (2 of 7) Structural Levels of Organization (continued) •Organ Level—Two or more tissue types combine to form an organ with a recognizable shape that performs a specialized task •Organ System Level—Two or more organs that together carry out a broad function in the body –The human body has 11 organ systems •Organism Level—The organ systems function together to make up the working human body—an organism Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Levels of Structural Organization and Body Systems (3 of 7) Figure 1.5 Six structural levels of organization of the human body. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Levels of Structural Organization and Body Systems (4 of 7) Figure 1.6 The 11 organ systems of the human body Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Levels of Structural Organization and Body Systems (5 of 7) Figure 1.6 The 11 organ systems of the human body Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Levels of Structural Organization and Body Systems (6 of 7) Figure 1.6 The 11 organ systems of the human body Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Levels of Structural Organization and Body Systems (7 of 7) Figure 1.6 The 11 organ systems of the human body Loading… Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Types of Anatomy and Physiology (1 of 2) Study of Anatomy can be approached in several ways •Systemic Anatomy—Examines individual organ systems •Regional Anatomy—Examines the body in regions, such as the head and neck •Surface Anatomy—Examines surface markings •Gross Anatomy—Examines structures that can be seen with the unaided eye •Microscopic Anatomy—Examines cells (Cytology) and tissues (Histology) with the use of a microscope Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.2 Types of Anatomy and Physiology (2 of 2) Study of Physiology includes numerous subfields •Physiology subfields are classified by organ or organ systems, such as neurophysiology and cardiophysiology •Physiologists can also study other structural levels of organization of the body such as chemical, cellular, and tissue levels Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Word Parts •The language of science is built on Word Roots—core components of words with specific meanings •Word roots are combined with Prefixes and Suffixes to yield scientific terms •For example, combine the following: –Prefix an- (means without) –Word root encephala- (means brain) –Suffix -ic (means condition of) •“Anencephalic” is the condition of lacking a part of the brain Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 The Anatomical Position and Directional Terms (1 of 4) Anatomical Position—Common frame of reference from which all body parts and regions are described regardless of position –Body is standing upright –Feet are shoulder width apart –Upper limbs at the sides of trunk –Head and palms facing forward Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 The Anatomical Position and Directional Terms (2 of 4) Directional Terms—Describe the relative locations of body parts and markings to ensure accurate communication among scientists and healthcare professionals •Anterior/Posterior—Anterior refers to the front and posterior refers to the back; Can refer to body as a whole or to a body part •Superior/Inferior—Superior, or cranial, means towards the head and inferior, or caudal, means towards the tail; Used to refer to positions on head, neck, and trunk only Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 The Anatomical Position and Directional Terms (3 of 4) Directional Terms (continued) •Proximal/Distal—Proximal means closer to the point of origin and distal means further from the point of origin; Used to refer to positions on the limbs only •Medial/Lateral—Medial refers to a position closer to the middle line of the body, called the midline, and lateral refers to a position farther away from the midline •Superficial/Deep—Superficial refers to structures closer to the surface of the body and deep refers to structures farther below Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 The Anatomical Position and Directional Terms (4 of 4) Figure 1.7 Directional terms. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Medical Errors •Most medical errors occur when a patient is dispensed the wrong type or dose of medication •Occasionally, they involve surgery and are known as “wrong site” or “wrong body” procedures when the surgeon operates on the wrong part of the body or even the wrong patient •Precise communication with appropriate use of anatomical terminology is critical to prevent medical errors Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Regional Terms (1 of 7) Regional Terms—The body can be divided into two broad regions: Axial (head, neck, and trunk); and Appendicular (upper and lower limbs or appendages) •Each broad region can be divided into several smaller Regions •Regions may be named as nouns, such as the upper arm or brachium, or as adjective with the addition of a suffix such as -al, which is paired with the word “region” to give us the term brachial region Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Regional Terms (2 of 7) Figure 1.8 Regions of the body. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Regional Terms (3 of 7) Figure 1.8 Regions of the body. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Regional Terms (4 of 7) Table 1.1 Regional Terms Region of the Trunk Pertaining To: Abdominal The abdomen Cervical The neck Gluteal The buttocks Inguinal The groin Lumbar The lower back Pelvic The pelvis Pubic The pubis Sacral The sacrum Sternal The sternum Thoracic The chest Vertebral The spinal column Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Regional Terms (5 of 7) Table 1.1 Regional Terms Region of the Head and Face Pertaining To: Buccal The cheek Cranial The skull Cephalic The head Frontal The forehead Mental The chin Nasal The nose Occipital The back of the head Ocular The eye Oral The mouth Otic The ear Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Regional Terms (6 of 7) Table 1.1 Regional Terms Region of the Upper Limb Pertaining To: Acromial The point of the shoulder Antebrachial The forearm Antecubital The anterior surface of the elbow Axillary The armpit Brachial The arm Carpal The wrist Digital The fingers (or toes) Manual The hand Metacarpal The metacarpals (bones of the hand) Palmar The palm Pollex The thumb Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Regional Terms (7 of 7) Table 1.1 Regional Terms Region of the Lower Limb Pertaining To: Coxal The hip Crural The anterior surface of the leg Femoral The thigh Hallux The great toe Metatarsal The metatarsals (bones of the foot) Patellar The anterior surface of the knee Pedal The foot Plantar The sole of the foot Popliteal The posterior surface of the knee Sural The posterior surface of the leg Tarsal The ankle Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Concept Boost: Putting Anatomical Terms Together (1 of 2) 1.Name the Region—Cervical region 2.Add Descriptive Directional Terms— On anterior side, Lateral to midline; Begins inferior to mental region; Ends superior to thoracic region 3.Describe Depth of Incision—Deep to skin and muscle; Superficial to underlying larynx 4.Put It All Together—Incision on anterior cervical region lateral to midline; Extended vertically 1 centimeter inferior to mental region to 2 centimeters superior to thoracic region; Deep to skin and muscle, but superficial to larynx Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Concept Boost: Putting Anatomical Terms Together (2 of 2) 1.Name the Region—Left Crural 2.Add Descriptive Directional Terms— On anterior and medial side; Proximal to tarsal region and distal to patellar region 3.Describe Depth of Incision—Deep to skin and muscle but superficial to bone 4.Put It All Together—Wound on left anteromedial crural region, 10 centimeters proximal to tarsal region and 6 centimeters distal to patellar region; Pellet is lodged deep to skin and muscle but superficial to bone Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Concept Boost Mini Lecture: Putting Anatomical Terms Together Use the link below to view A D A compliant video: Concept Boost Mini Lecture: Putting Anatomical Terms Together https://mediaplayer.pearsoncmg.com/assets/_video.true/bc_amerman_hap_3_concept-boost_ch1 Loading… Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Planes of Section (1 of 4) Planes of Section—Divide a body or body part for examination •Sagittal Plane—Divides body into right and left sections –Midsagittal Plane: Also called a Median Plane; Sections are equal –Parasagittal Plane: Sections are unequal Figure 1.9a Sagittal plane. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Planes of Section (2 of 4) Planes of Section (continued) •Frontal Plane—Also called a Coronal Plane; Divides body into anterior and posterior sections Figure 1.9b Frontal plane. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Planes of Section (3 of 4) Planes of Section (continued) •Transverse Plane— Also called a Horizontal Plane or Cross Section; Divides body into superior and inferior sections or proximal and distal sections •Oblique Plane—Used less frequently; Taken at an angle Figure 1.9c Transverse planes. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.3 Planes of Section (4 of 4) Study Boost: How to Learn Anatomical Terms •Flashcards are popular because research shows that they work –Make customized flashcards with Practice Anatomy Lab™ Flashcards in the Study Area of Mastering® A&P –Make handwritten flashcards •Don’t forget to “Bring It Back” by quizzing yourself and “Mix It Up” by randomizing the order Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 The Posterior Body Cavity Cavity—Any space within the body; Protects internal organs and allows them to move Posterior Body Cavity— Located on posterior side of body •Cranial Cavity—Within the skull; Includes the brain •Spinal Cavity—Within the vertebral column; Includes the spinal cord •Both cavities are filled with Cerebrospinal Fluid, which bathes both organs Figure 1.10a Posterior body cavity, lateral view. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 The Anterior Body Cavity (1 of 8) Anterior Body Cavity—Has two main divisions separated by the muscular diaphragm •Thoracic Cavity is superior to the diaphragm •Abdominopelvic Cavity is inferior to the diaphragm •Smaller cavities exist within the thoracic and abdominopelvic cavities formed by sheets of tissue termed Serous Membranes Figure 1.10b Anterior body cavity, anterior view. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 The Anterior Body Cavity (2 of 8) Anterior Body Cavity (continued) •Thoracic Cavity –Pleural Cavities—Surround left and right lungs –Mediastinum—Between pleural cavities; Houses heart, great vessels, trachea (windpipe), and esophagus; Not within serous membrane –Pericardial Cavity—Within mediastinum; Within serous membrane that surrounds heart Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 The Anterior Body Cavity (3 of 8) Anterior Body Cavity (continued) •Abdominopelvic Cavity—Subdivided into superior Abdominal Cavity (diaphragm to bony pelvis) and inferior Pelvic Cavity (within bony pelvis) •Contains organs from digestive, lymphatic, urinary, and reproductive systems •Peritoneal Cavity—Abdominal subcavity found within serous membranes Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 The Anterior Body Cavity (4 of 8) Abdominopelvic Cavity can be divided into segments by drawing imaginary lines through its surface •One system divides the cavity into four Quadrants –Right and left upper quadrants (R U Q and L U Q); Right and left lower quadrants (R L Q and L L Q) •A second system divides the cavity into nine Regions –Right and left hypochondriac regions, Right and left lumbar regions; Right and left iliac regions; Epigastric region; Umbilical region; Hypogastric region Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 The Anterior Body Cavity (5 of 8) Figure 1.11 The four quadrants and nine regions of the abdominopelvic cavity. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 Abdominal Pain •Abdominal pain is a common reason for people to seek health care, but the number of structures in the abdominopelvic cavity make diagnoses difficult •The four-quadrant system helps to narrow down potential diagnoses •For example, R L Q pain may be from the appendix, ovaries in female, the first part of the large intestine, or the last portion of the small intestine Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 The Anterior Body Cavity (6 of 8) Serous Membranes—Thin sheets of tissue that fold over to form continuous double-layered structures filled with Serous Fluid to lubricate organs in the cavity –Visceral Layer—Contacts the organ –Parietal Layer—Attaches to surrounding structures Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 The Anterior Body Cavity (7 of 8) Serous Membranes (continued) •Pleural Membranes—Surround the lungs; Includes parietal and visceral pleura •Pericardial Membranes—Surround the heart; Includes parietal and visceral pericardium •Peritoneal Membranes—Surround some abdominal organs (Intraperitoneal); Includes parietal and visceral peritoneum •Organs behind the parietal peritoneum are Retroperitoneal Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 The Anterior Body Cavity (8 of 8) Figure 1.13 The serous membranes of the anterior body cavities. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 Medical Imaging (1 of 2) •Used to look inside patients without surgery; Different forms of radiation form images of internal structures often along specific planes •X-Ray uses ionizing radiation; Chest image is shown (top) •Computed Tomography Scan (C T) uses ionizing radiation; 3-D image is computer generated from data; Transverse section of abdominopelvic and peritoneal cavities is shown (bottom) Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.4 Medical Imaging (2 of 2) •Magnetic Resonance Imaging (M R I) involves the body being placed within a magnetic field; 3-D image is computer generated from data; Transverse section of the abdominopelvic cavity is shown Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Core Principles in Anatomy and Physiology Core Principles—Set of basic concepts of anatomy and physiology that are revisited repeatedly in the text; They are related to maintaining the body’s internal environment •Feedback Loops •Relationship of Structure and Function •Gradients •Cell-Cell Communication Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Overall Theme: Physiological Processes Operate to Maintain the Body’s Homeostasis •Homeostasis—The condition in which the body develops and maintains a relatively stable internal environment –Homeostatic Imbalances—Disturbances in homeostasis can lead to disease or death if uncorrected –Regulated Variables—Variables in the internal environment, such as temperature, blood sugar, and many others, are controlled to stay close to a particular normal value –Controlled Variables—Variables that are manipulated to maintain the regulated variables, such as the process that increases blood sugar from stored carbohydrates Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Feedback Loops Are a Key Mechanism Used to Maintain Homeostasis (1 of 8) Feedback Loops—A change in a regulated variable causes effects that feed back and in turn affect that same variable •Made up of a series of events that lead to an output •As the loops continue, this output then influences the events of the loops themselves •Negative Feedback Loops—Oppose the initial change and reduce the output •Positive Feedback Loops—Reinforce the initial change and increase the output Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Feedback Loops Are a Key Mechanism Used to Maintain Homeostasis (2 of 8) Negative Feedback Loops—Promote stability; Negating any stimulus that moves a variable away from homeostasis •Each variable has a Set Point that includes a Normal Range around that set point •The range differs for individual variables Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Feedback Loops Are a Key Mechanism Used to Maintain Homeostasis (3 of 8) Steps of a Negative Feedback Loop 1.Stimulus—Information that a regulated variable is outside the normal range 2.Receptor or Sensor—Cellular structure that registers the stimulus 3.Control Center—Stimulus is sent to the control center (brain or gland) by the nervous or endocrine systems 4.Effector—The cells or organ that will react 5.Responses—Effector causes the response that will return the variable to the normal range Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Feedback Loops Are a Key Mechanism Used to Maintain Homeostasis (4 of 8) Figure 1.14 Control of room temperature by a negative feedback loop. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Feedback Loops Are a Key Mechanism Used to Maintain Homeostasis (5 of 8) Figure 1.15 Control of body temperature by a negative feedback loop. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Feedback Loops Are a Key Mechanism Used to Maintain Homeostasis (6 of 8) Study Boost: Keeping Track of the Body’s Feedback Loops •Feedback loops occur in all body systems so there are many to remember •As you learn new feedback loops, add them to the Feedback Loops Master List page at the front of the Active-Learning Workbook •Use the list to quiz yourself “Bring It Back,” review feedback loops from other chapters “Space It Out,” and have a friend quiz you from the list in a random order “Mix It Up” Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Feedback Loops Are a Key Mechanism Used to Maintain Homeostasis (7 of 8) Positive Feedback Loops—Less common than negative feedback loops; Increases the response to a stimulus; Reinforces the initial stimulus •Will eventually shut off in response to an external stimulus or some outside event that is not part of the positive feedback loop •Positive feedback loops are often found within a negative feedback loop to produce a quicker response Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Feedback Loops Are a Key Mechanism Used to Maintain Homeostasis (8 of 8) Figure 1.16 Control of blood clotting by a positive feedback loop. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Common Misconceptions about Homeostasis (1 of 2) •Misconception 1: Negative feedback is bad for the body; Positive feedback is good –Under normal circumstances, both types of feedback loops promote homeostasis •Misconception 2: Maintaining homeostasis means the body’s internal environment is static or unchanging –Maintenance of normal ranges does not mean the internal environment is unchanging; Changes are normal and are occurring constantly Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Common Misconceptions about Homeostasis (2 of 2) •Misconception 3: Regulatory mechanisms and feedback loops are either “on” or “off,” like a switch –The internal environment is dynamic so feedback loops always exhibit some degree of activity •Misconception 4: Any physiological variable can be controlled –Variables can only be controlled through feedback loops if receptors exist to detect changes in the set point Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 BioFlix: Homeostasis Use the link below to view A D A compliant video: BioFlix: Homeostasis https://mediaplayer.pearsoncmg.com/assets/loMS4qosEmL53haP3z1Z_eWMupIkyIFv Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Childbirth, Pitocin, and Positive Feedback Loops •Childbirth begins when a woman goes into labor, which occurs by a positive feedback loop •Baby’s head stretches the cervix (stimulus); Data from nerves in the cervix (receptors) are sent to the brain (control center); Uterus (effector) produces hormone oxytocin which stimulates uterine contractions (response); This continues and is amplified until the baby is born, which stops the feedback loop •Pitocin is a synthetic version of oxytocin that is used when labor needs to be artificially started, or induced Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Structure and Function are Related at All Levels of Organization Principle of Complementarity of Structure and Function •The form of a structure is such that it best suits its function; Applies to all levels of organization Figure 1.17 The relationship between structure and function. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Gradients Drive Many Physiological Processes Gradients are present any time more of something exists in one area than another and the two areas are connected •Gradients drive many of our physiological processes Figure 1.18 Examples of gradients. Copyright © 2025, 2019, 2016 Pearson Education, Inc. All Rights Reserved 1.5 Cell-Cell Communication is Required to Coordinate Body Functions •Cells communicate with each other to maintain homeostasis •Electrical Signals are transmitted between neighboring cells •Chemical Messengers released from cells may work on neighboring cells or move to other cells through body fluids Figure 1.19 Communication between a nerve cell and a muscle cell.

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