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Vasoconstriction - Narrowing blood vessels that supply skin, Vasodilation - Widening of blood vessels that supply skin, Thermo regulatory centre - Part of brain that coordinates body temperature, Receptors - Detect changes in temperature, 37ºC - Core (internal) body temperature, Enzymes - Need optimum temperature (37ºC) to function, Sweat glands - Release sweat , Lie flat - Response of hairs if body is hot, Stand up - Response of hairs if body is too cold, Shivering - Rapid muscle contractions which release heat energy, Evaporate - Sweat must do this to cool the body,

Temperature regulation (thermoregulation)

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