Term
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Definition
the flow of energy through an animal
-food -> atp -> cellular work or biosynthesis |
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Term
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Definition
| growth, reproduction, storage- fat and glycogen |
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Term
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Definition
| the amount of energy and animal uses in a certain unit of time |
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Term
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Definition
-endotherms have a higher MR than ectotherms
-smaller animals have a higher MR per gram
-maximum MR is inversely related to the duration of the activity |
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Term
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Definition
| main source of body heat is generated by metabolism |
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Term
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Definition
| gather heat mainly from external sources (e.g. the sun) |
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Term
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Definition
| steady state, internal balance. An interplay between outside factors that change internal environments and internal factors that oppose such changes. |
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Term
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Definition
| a change that triggers a control mechanism to counteract further change in the same direction. |
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Term
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Definition
| a change in a variable that triggers a response that amplifies the change rather than reversing it. |
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Term
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Definition
| the process by which animals maintain an internal temperature within a tolerable range. |
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Term
| 5 adaptations for thermoregulation |
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Definition
1. Insulation- fur, hair, feathers
2.Circulatory adaptations- alter blood flow (veins increase in diameter= cooler, decrease in diameter= warmer)
3. Cooling by evaporative heat loss- sweating, panting, bathing
4. Behavioral responses- basking, seeking shade, huddling
5. Adjusting metabolic heat production- shivering |
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Term
| Mammalian temperature regulation |
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Definition
| increase insulation, negative feedback- hypothalimus acts as a thermostat |
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