Mammals have Many Mechanisms to Change Body Temperature
- Created by: Agata
- Created on: 29-02-16 13:35
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- Control of Body temperature
- Endotherms- e.g. mammals, birds.
- Control body temperature internally by homeostasis. They can also control their temperature by behavior (e.g. by finding shade).
- They internal temperature is less affected by the external temperature (within certain limits).
- Their activity level is largely independent of the external temperature - they can be active at any temperature (within certain limits).
- They have a constantly high metabolic rate and they generate a lot of heat from metabolic reactions.
- Ectotherms - e.g. reptiles, fish
- Can't control their body temperature internally - they control their temperature by changing their behavior
- E.g. reptiles gain heat by basking in the sun.
- Their internal temperature depends on the external temperature.
- Their activity level depends on the external temperature- they're more active at higher temperatures and less active at lower temperatures.
- They have a variable metabolic rate and they generate very little heat themselves.
- Can't control their body temperature internally - they control their temperature by changing their behavior
- Endotherms- e.g. mammals, birds.
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