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10 Cards in this Set
- Front
- Back
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poikilothermic
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body temperature matches the temperature of the environment
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homeothermic
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maintain a constant body temperature despite changes in temperature of environment
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Mechanisms to increase body heat in cold environments
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1. Shivering
2. decrease blood flow to the skin 3. fluff out fur (goose bumps) 4. find a cooler place 5. become more active 6. put on more clothing 7. huddle with others |
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POA/AH
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Preoptic area/anterior hypothalamus - monitors body temperature (damage causes animal to result to behavioral mechanisms)
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cytokines
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small proteins released by leukocytes that attack "intruders"
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osmotic thirst
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water will flow from the higher concentrated side of a neuron to the lower concentrated side
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OVLT + SFO
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areas important for detecting osmotic pressure and salt content of the blood
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supraoptic nucleus
paraventricular nucleus lateral preoptic area |
areas of the hypothalamus that control drinking/thirst
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angiotensin II
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constricts blood vessels, compensating for drop in blood pressure (similar to ADH)
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hypovolemic thirst
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"thirst based on low volume", need to restore salts and water (prefer more salty water)
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