How does the body respond to a rise in temperature?

A rise in body temperature will be detected by the thermoregulatory centres in the hypothalamus. When the core body temperature exceeds 37 degrees C the blood vessels will dilate and shunt vessels will constrict. This means that the blood flows closer to the skins surface and more heat will be lost through radiation to the external environment. Additionally, the individual will produce sweat from glands, this layer of liquid over the skin will use heat from the body to evaporate. As a result, the body temperature cools further, maintaining a temperature of 37 degrees C.