Homeostasis

Vasodilation and Vasoconstriction

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Homeostasis

Blood temperature is monitored by a centre in your brain called the hypothalamus

In hot conditions,blood vessels in the skin dilate,allowing more blood to flow through the skin capillaries.This means that more heat is lost from the surface of the skin by radiation. This is called Vasodilation

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Homeostasis

In cold conditions,blood vesselsn in the skin con

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