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7 Cards in this Set
- Front
- Back
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What is physiology?
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branch of biology dealing with the functions and activities of living organisms and their parts, including all physical and chemical processes
"natural science" physis - "nature" + logia - "study" |
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What are the major environmental factors with which humans interact?
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oxygen, water, food, physical components, social components, microorganisms, and parasites
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What are the contact systems of the human body?
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the sensory organs, the skin, the respiratory system, and the digestive system
(they come into direct contact with the external environment) |
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What is the internal environment and what must be regulated constantly?
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The surrounding fluid and cells in the human body. Temperature, pH, and concentration of chemical components must be regulated for normal functioning of the body
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What is homeostasis?
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the tendency of a system to maintain internal stability owing to the coordinated response of its parts to any situation or stimulus that would tend to disturb its normal condition or function. homoios + stasis
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Total body water by age expressed as a percentage
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Fetus - 100%
Neonate - 82% child - 70% adult - 60% elderly - 52% |
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body composition (of a 70 kg man)
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water - 60%
protein - 18% fat - 18% minerals - 4% |
