Thermoregulation
- Created by: NWILKA1
- Created on: 27-05-14 17:16
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- Thermoregulation
- Thermoregulatory centre
- Monitors and controls body temperature
- Situated in the brain
- Has receptors sensitive to temperature of the blood flowing through the brain.
- Temperature receptors in the skin send impulses to the TC giving information about skin temp.
- If core body temperature is too high...
- Blood vessels supplying skin capillaries dilate
- More blood flows through the caplillaries and more heat is lost.
- Sweat glands release more sweat
- Cools body down as it evaporates
- Blood vessels supplying skin capillaries dilate
- If core body temperature is too low...
- Blood vessel supplying skin cappilaries constrict
- Reduces blood flow which reduced heat loss
- Muscles contract (shiver)
- Contractions need respiration, which releases some energy to warm the body.
- Blood vessel supplying skin cappilaries constrict
- Thermoregulatory centre
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