Term
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Definition
| maintaining a stable internal environment |
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Term
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Definition
| a change in a variable triggers mechanisms that reverse that change |
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Term
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Definition
| releases calcitonin if blood calcium level rises |
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Term
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Definition
| stimulates bones to take in calcium and reduces calcium uptake in the kidneys |
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Term
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Definition
| release PTH if blood calcium level decreases |
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Term
| PTH (parathyroid hormone) |
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Definition
| stimulates the release of calcium in the bones, increases calcium intake in the kidneys and intestines |
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Term
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Definition
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Term
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Definition
| tells cells to take in glucose and liver to store glucose as glycogen |
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Term
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Definition
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Term
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Definition
| tells liver to break down glycogen and release it as glucose |
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Term
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Definition
| internal body temperature is the same as the external temperature |
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Term
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Definition
| internal temperature is different than the external temperature |
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Term
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Definition
| regulates nervous and pituitary activity |
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Term
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Definition
| blood is close to the surface of the skin when body temperature rises |
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Term
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Definition
| blood moves farther from the surface of the skin when body temperature decreases |
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Term
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Definition
| organisms that regulate water loss and gain |
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Term
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Definition
| involves balancing uptake and loss of water and solutes like salt and other ions |
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Term
| ADH (antidiuretic hormone) |
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Definition
| signals nephrons to step up water absorption when solute concentrations rise above a set point |
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Term
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Definition
| steroid hormones by the adrenal cortex that increase blood glucose |
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Definition
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