Thermoregulation - control of body temperature
- Receptors detect temperature change and relay this information to the CNS
- The CNS allows effects to respond
Receptors in the thermoregulatory centre of the brain (hypothalamus) monitor the internal body temperature as the blood flows through the brain
Receptors on the surface of the skin monitor the temperature at the surface of the body
If the body is too cold:
- Muscle contractions increase - shivering
- Hairs stand on end
- Blood vessels vasoconstrict
If the body is too hot:
- Sweat is released from sweat glands under the skin
- Hairs lie flat
- Blood vessels vasodilate
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