As the body starts to get overheated, thermoreceptors in the skin send messages to the brain that the body is getting too hot. The hypothalamus in the brain then coordinates a response by sending signals to the sweat glands to initiate sweating. Simultaneously, a nerve message is sent to the blood vessels in the skin causing them to dilate. As a result of vasodilation, dilated blood vessels increase blood flow to the surface of the skin causing it to appear redder. The sweat droplets on the surface of the skin evaporate, cooling the skin and the blood flowing beneath it. The blood returning to the body is now much cooler.
A second but simultaneously occurring of thermoregulation of heat stress happens when the brain sends signals to the respiratory
A second but simultaneously occurring of thermoregulation of heat stress happens when the brain sends signals to the respiratory