Term
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Definition
1. Structure
2. Structure that works. Focus on function. |
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Term
| Physiology sub-disciplines |
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Definition
1. Environmental
2. Evolutionary
3. Developmental
4. Cell
5. Comparative |
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Term
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Definition
1. Intracellular fluid (within cells)
2. Extracellular fluid (outside cells, but within the body; internal environment) |
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Term
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Definition
| 1. Regulation and maintenance of internal stability (i.e. temperature, osmotic concentration, pH, oxygen, etc.) |
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Term
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Definition
| 1. Use of sensory information about a variable (CO2, pH, etc) to control processes in cells, tissues, and organs that influence the internal level of the variable. |
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Term
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Definition
| 1. Homeostatic regulation that brings variable back to a set-point. |
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Term
| 1. How does negative feedback yield corrective action? |
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Definition
| 1. Immediate corrective action by an integrating center. Comparator sends the error signal. Effectors enact correction. Brings variable back to a set-point. (Ex: Car on a hill) |
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Term
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Definition
| 1. Destabilizing regulation. No set-point. Output becomes stronger and stronger in response as output signal becomes amplified. (Ex: tumorigenesis, Estrogen secretion in ovaries as a response to LH secretion in Pituitary) |
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Term
1. Heat Transfer occurs by 4 mechanisms
2. Heat transfer depends on |
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Definition
1. Conduction, convection, radiation, evaporation
2. Surface area, temperature difference, specific heat conductance |
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Term
| 1. Thermoregulation flow chart basics |
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Definition
1. Thermoreceptors detect temperature, input, brain centers integrate, output.
Output goes to: Sweat glands or blood vessels for heat loss. Skeletal muscles for heat gain. Increase in body temperature is negative feedback to thermoreceptors. |
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Term
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Definition
| 1. Associated with infection by bacteria or viruses that contain pyrogens. |
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Term
| 1. Behavioral thermoregulation |
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Definition
| 1. Suggestion that fever is adaptive based on cold-blooded animals warming themselves with external heat. |
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Term
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Definition
| 1. Example: Acclimatizing to poor O2 environments on mountain tops. |
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