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The eye and vision defects, Body Temperature control - Coggle Diagram
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Body Temperature control
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Altering temperature
When you're too hot
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1) Sweat is produced by sweat glands and evaporates from the skin. This transfers energy to the environment.
The blood vessels supplying the skin dilate so more blood flows close to the surface of the skin. This is called vasodilation. This helps transfer energy from the skin to the environment.
When you're too cold
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3) Blood vessels supplying skin capillaries constrict to close off the skin's blood supply. This is called vasoconstriction.
4) When you're cold you shiver (your muscles contract automatically). This needs respiration, which transfers some energy to warm the body.
Different responses are produced by effectors to counteract an increase or decrease in body temperature.
effectors
Some effectors work antagonistically, e.g. one effector heats and another cools — they'll work at the same time to achieve a very precise temperature. This mechanism allows a more sensitive response
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