Transcription of Human Physiology (Biology 4) Lecture Notes
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Human Physiology (Biology 4) Lecture Notes
1 Human Physiology (Biology 4) Lecture Notes Updated July 2017 Instructor: Rebecca Bailey 2 Chapter 1 Homeostasis Anatomy - the study of body structure Physiology - the study of body function 1. mechanistic approach a. explain how events occur b. , you shiver because a drop in body T leads to signals for muscle contraction 2. teleological approach a. explain how a function fills a need, "why" b. , you shiver because you need to keep warm 3. both approaches can be useful in understanding concepts Levels of Organization - Chemical level 1. atoms and molecules - Cells 1. the basic unit of living things 2. humans are multicellular 3. several basic functions of all cells a. obtain nutrients and O2 b. make usable energy, Food + O2 CO2 + H2O + energy c. eliminate wastes d. synthesize needed molecules e.
and it goes into blood, e.g. adrenal glands) c. nervous (1) specialized for initiating and transmitting electrical impulses (2) brain, spinal cord, nerves d. connective (1) specialized for connecting and supporting (2) found all over body - Organs 1. group of two or more tissues designed to perform specific functions - Body System (organ system) 1.
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