- Negative feedback loop - method of control and maintaining constant conditions.
- The average body temperature of a human is 37/38 degrees centigrade.
- In order for it to work we have receptors of body temperature - hypothalamus.
- Responds to a stimulus - temp of body and blood.
- Body temperature feeds into the brain and is compared to the theoretical level of control. (37/38degrees).
- If the body temperature needs to be increased of decreased then it is brought about through the action of the effector.
- Input into hypothalamus, stimulates responses in the skin for cooling, sweating + increased blood flow.
- Blood vessels dilate (widen)
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