How does the body control the temperature?

Answer 1

Receptors on the skin and the hypothalmus region of the brain are responsible for monitoring our body temperature. If it falls too low, vasoconstriction takes place to reduce the amount of blood that reaches the surface of our skin, hence less heat is lost by radiation. This is why you turn pale in cold weather. Your hairs will also stand on end to trap an insulative layer of air. Rapid contraction and relaxation of your muscles - shivering - generates heat to warm you up. If you are too hot, the reverse happens. Vasodilation increases blood flow to the skin, so more thermal energy can be lost (this explains why people look flushed if they've run a marathon in the middle of summer!). Hairs lie flat to prevent a layer of air from warming us up even further, and we sweat to lose heat from our body by evaporation.

Answer 2

homeostasis

The temperature of the body is regulated by neural feedback mechanisms which operate primarily through the hypothalmus. The hypothalmus contains not only the control mechanisms, but also the key temperature sensors