BIOM1060 Lecture Notes Review

BIOM1060 Course Introduction

  • Course Coordinator: Dr. Louise Ainscough

  • Dr. Ainscough's expertise lies in human anatomy and physiology, ensuring a comprehensive learning experience.

  • Contact Email: I.ainscough@uq.edu.au

  • Students are encouraged to reach out with any queries or for clarification regarding course materials.

Acknowledgment of Country

  • The University of Queensland (UQ) acknowledges the Traditional Owners of the land on which it stands, including the Aboriginal and Torres Strait Islander peoples. UQ recognizes their enduring connection to the land, waters, and communities, and values their contributions to the social and cultural fabric of society.

Commitment to Diversity and Inclusion

  • UQ is dedicated to fostering a diverse environment that respects and celebrates the multitude of backgrounds, experiences, and perspectives of all individuals. This commitment creates a culturally safe space for students and staff alike.

Course Resources

  • Textbook: Human Anatomy & Physiology by Marieb and Hoehn (2022, 12th Edition)

  • This essential textbook provides foundational knowledge essential for understanding the structure and function of the human body.

  • E-textbook and Mastering A&P: Free access for all enrolled students, providing additional resources, quizzes, and interactive learning opportunities that complement the coursework.

  • Study Guides: Specific study guides are available for independent learning reflecting the topics covered in each module. Note that they provide no answers to encourage you to engage critically with the material.

Lectures

  • Frequency: 4 hours of lectures per week, providing in-depth coverage of course material.

  • Format: The initial six weeks of lectures will be delivered face-to-face to allow direct interaction with staff and peers. For the remainder of the semester, lectures will be available as pre-recorded online sessions to offer flexibility for students.

  • Modules and Lecturing Staff:

  • Cell and cell membrane physiology: Dr. Louise Ainscough

  • Nervous system: Dr. Louise Ainscough & Taylor Dick

  • Musculoskeletal system: Taylor Dick

  • Cardiovascular system: James Cuffe & Luli Faber

  • Other systems (online): James Cuffe

Practical Classes

  • Duration: Each practical session lasts 2 hours, and attendance is mandatory to gain hands-on experience and practical knowledge of the subject matter.

  • Location: Classes will cover various anatomical and physiological topics, utilizing cadaveric specimens and conducting physiological measurements, including ECG and spirometry for hands-on learning.

  • Personal Protective Equipment: Students must wear mandatory lab coats, safety glasses, closed-toe shoes, and carry their UQ student IDs during practical classes to ensure safety and compliance with university regulations.

Tutorials

  • Tutorials provide a platform for peer revision and feedback. These sessions allow for collaborative learning and deeper understanding of the course content.

  • The specific topics covered in tutorials will vary throughout the weeks to align with lecture materials and assessment preparation.

Assessment Overview

  • Engagement Worksheets (20%): A total of 9 worksheets will be submitted in class, with only the best 5 scores contributing to your final grade.

  • Meta-learning Task (5%): This task encourages self-reflection on learning strategies and will be due in week 13 of the semester, fostering self-regulated learning practices.

  • In-Semester Exam (35%): This exam will assess knowledge from the first five weeks' material, encapsulating essential foundational concepts.

  • End of Semester Exam (40%): This comprehensive exam will cover all materials pertaining to weeks 6 to 13, requiring a thorough understanding of the later topics.

Expectations

  • Students are strongly encouraged to allocate sufficient study time, as this course may take longer than initially anticipated due to the complexity of the material.

  • Participation in class activities and discussion is highly encouraged to enhance learning outcomes; forming study groups is recommended to facilitate collaborative review and support.

Organizing Body & Levels of Organization

  • Bioorganization Hierarchies: The course will delve into the biological organization from atoms to organism, helping to conceptualize interconnected physiological processes:

  • Atoms -> Molecules -> Organelles -> Cells -> Tissues -> Organs -> Organ Systems -> Organism

  • 4 Main Tissue Types:

    1. Epithelial: Forms linings and covers organs, also plays a key role in absorption and secretion.

    2. Connective: Supports and binds other tissues, includes various types such as blood and bones.

    3. Muscle: Facilitates movement, comprising cardiac, skeletal, and smooth muscle types.

    4. Neural: Comprises neurons and glial cells, essential for signal transmission and coordination of bodily functions.

Anatomical Orientation

  • Anatomical position: The standardized position used to describe human anatomy; standing upright, facing forward, with arms at sides and palms facing anteriorly.

  • Directional Terms: Understanding these terms is crucial for anatomy communication:

  • Superior/Inferior, Medial/Lateral, Anterior/Posterior, Proximal/Distal

Cell Structure and Function

  • Cells Have 3 Main Compartments: Understanding the structure and purpose of these compartments is key in physiology.

  • Nucleus: Acts as the control center for protein synthesis and contains the genetic material (DNA).

  • Cytoplasm: Hosts organelles such as rough/smooth endoplasmic reticulum and Golgi apparatus, involved in various cellular processes.

  • Plasma Membrane: Functions as a barrier, regulating entry and exit of substances in and out of the cell.

Organelles

  • Nucleus: Encloses genetic material and is surrounded by a nuclear envelope that allows for controlled exchange of materials with the cytoplasm.

  • Ribosomes: Sites for protein synthesis, located freely in the cytosol or bound to rough endoplasmic reticulum.

  • Endoplasmic Reticulum (ER):

  • Rough ER: Primarily involved in the synthesis of proteins.

  • Smooth ER: Plays a crucial role in detoxification processes, hormone production, and calcium ion release.

  • Golgi Apparatus: Functions in processing and sorting proteins, preparing them for secretion or delivery to specific cellular locales.

  • Lysosomes/Peroxisomes: Contain hydrolytic enzymes to break down waste materials and cellular debris.

  • Mitochondria: Known as the powerhouse of the cell, responsible for energy production through aerobic respiration.

Plasma Membrane Properties

  • Structure and Composition: Comprised of a phospholipid bilayer integrated with various proteins, enabling functions like transport and communication.

  • Functions:

  1. Acts as a mechanical barrier to protect cellular integrity.

  2. Exhibits selective permeability to regulate material entry and exit.

  3. Maintains electrochemical gradients crucial for physiological functions.

  4. Facilitates communication and cell signaling through receptor proteins.

Membrane Transport

  • Mechanisms of Transport: Understanding these processes is vital for comprehending how cells interact with their environment.

  • Passive Transport: No energy expenditure required, across the concentration gradient, includes:

    • Simple diffusion

    • Facilitated diffusion

    • Osmosis

  • Active Transport: Energy (ATP) is used to move substances against their concentration gradient, comprising:

    • Primary transport mechanisms (e.g., Na+-K+ pump)

    • Secondary transport methods

    • Vesicular transport (such as endocytosis and exocytosis)

Diffusion and Osmosis

  • Diffusion: Refers to the passive movement of molecules from an area of high concentration to low concentration until equilibrium is achieved.

  • Osmosis: The specialized movement of water molecules from a region of low solute concentration to high across a semipermeable membrane.

  • Tonicity Impact: Understanding how various solutions (isotonic, hypotonic, hypertonic) affect cell size is crucial for physiological and clinical contexts.

Active Transport

  • Types of Active Transport:

  • Primary Active Transport: Directly utilizes ATP to actively transport ions (e.g., Na+-K+ pump to maintain electrochemical gradients).

  • Secondary Active Transport: Relies on the energy derived from the movement of one ion against its gradient to drive the movement of another ion along its gradient.

Vesicular Transport

  • This transport process involves the use of vesicles to transfer materials across the plasma membrane, requiring ATP. Vesicular transport includes:

  • Endocytosis: The inward movement of materials into the cell.

  • Exocytosis: The outward movement of materials out of the cell, essential for secretion processes.

References

  • Marieb EN, Hoehn K (2022). Human Anatomy & Physiology (12th Ed). This textbook serves as a primary resource for course content.

  • Additional supplementary materials provided by other noteworthy authors, including Reece, Sherwood, and Saladin, on critical physiology concepts and anatomical structures for enhanced student understanding.