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14 Cards in this Set
- Front
- Back
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What factor is the most important in overall heat production
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exercise
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How much can sympathetic stimulation or thyroid hormone increase cellular metabolism
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2 times normal
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How much do carbohydrates and fats increase BMR
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10-15% for 3-6 hours
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How much do proteins increase BMR
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60% for 12 hours
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Which heat loss mechanisms need no temp gradient
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urine/feces
evaporation |
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Where is the heat gain center located
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posterior hypothalamus
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Where is the heat loss center located
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anterior hypothalamus
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What are the compensatory mechanisms of the heat gain center
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vasoconstriction
increased metabolism shivering |
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What are the compensatory mechanisms of the heat loss center
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vasodilation
Ach release at sweat glands |
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A change in temperature without a change in set point
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hyper or hypothermia
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Mediates resetting of hypothalamus
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prostaglandin E2
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2 naturally occurring anti-pyretics
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arginine vasopressin
ACTH |
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Organs that are the highest heat producers
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endocrine glands
liver heart brain |
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What is the tonicity of sweat
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hypotonic
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