Intro to A&P

Lesson 1

anatomy

study of structure

gross/macroscopic

subdivision of anatomy that includes regional, systematic, and surface anatomy

microscopic

subdivision of anatomy that includes cytology (cells) and histology (tissues)

developmental

subdivision of anatomy that includes embryology (development of embryo)

physiology

study of the function of the body

often focuses on cellular / molecular level

tissue

groups of similar cells

organ

contains two or more types of tissues

water

what is the most abundant chemical in the body

37 celcius

what is the normal body temperature

homeostasis

maintaining a stable internal environment

requires a lot of energy

maintained by all organ systems working together

stimulus

produces change in variable

receptor

detects change (stimulus)

afferent pathway

what pathway is leads to the control center

control center

takes the input information and outputs it to the effector

efferent pathway

what pathway is this

control center → effector

negative feedback

response that reduces or shuts off the original stimulus

most common feedback in the body

positive feedback

response increases / enhances the original stimulus

amplifying effect

multicellular

are humans multicellular or unicellular

unicellular

are amoebas unicellular or multicellular

necessary life functions

what is listed below:

maintaining boundaries, movement, responsiveness, digestion, metabolism, dispose of wastes, reproduction, growth

growth

increase in cell number and size and an increase in body size

reproduction

production of new cells / organisms

responsiveness

reaction to a change

movement

change in body position

metabolism

sum of all chemical reactions in a living system

energy and nutrient cycling

respiration

acquiring energy

digestion

breaking down food into nutrients

circulation

moving chemicals / cells through body fluids

excretion

removing waste products