Term
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Definition
| Maintenance of a constant internal environment. |
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Term
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Definition
| Balance between the demands placed on a body and the physiological response to those demands. |
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Term
Components of biological control (4)
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Definition
1. Stimulus: alteration in homeostatic level of some physiologic variable
2. Recepter: Capable of detecting changes.
3.Integrating center: Assesses input and initiates response
4. Effector: Corrects changes to internal environment.
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Term
| Example of Regulation of Blood Glucose (homeostatic control) |
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Definition
1. Blood glucose levels change (stimulus)
2. Signal goes to pancreas (sensor organ and the effector)
3. pancreas releases insulin, which increases cellular uptake. |
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Term
| Most control systems act by way of .... |
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Definition
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Term
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Definition
| the degree to which a control system maintains homeostasis. Large gain, means more capable of maintaining homeostasis. |
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Term
| What changes during exercise challenge physiologic homeostasis? |
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Definition
| Temp, pH, O2 demands, CO2 production, and other metabolic wastes (lactic acid) |
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Term
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Definition
| Describes the response from a control system that reduces the size of the stimulus. |
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