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Physiology
the science of body function
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Cell
Smallest living unit
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4 types of tissue
epithelial, connective, muscle, nervous
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homeostasis
the ability to maintain a relatively constant internal environment
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Conditions of the internal environment which are regulated include:
- temperature
- volume and pressure
- composition of fluids (water, electrolytes)
- pH
- oxygen and carbon monoxide (O2 & CO2)
- nutrients
- waste products
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regulated variable
the aspect which is maintained
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negative feedback
- If a regulated variable decreases, system responds to make it increase, and vice versa
- tends to be self correcting
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