正常人体温能恒定在37℃左右,是通过下丘脑体温调节中枢的作用,使产热与散热取得平衡的结果,当周围环境温度超过皮肤温度时,散热主要靠出汗,以及皮肤和肺泡表面的蒸发。人体的散热还可通过循环血流,将深部组织的热量带至上下组织,通过扩张的皮肤血管散热,因此经过皮肤血管的血流越多,散热就越多。如果产热大于散热或散热受阻,体内有过量热蓄积,即产生高热中暑。 Normal body temperature can be constant at about 37 ℃, through the role of the hypothalamus temperature regulation center, the heat and heat balance, as the ambient temperature exceeds the skin temperature, the heat mainly by sweating, and the skin and alveolar surface Of evaporation. The body’s heat can also circulate blood flow, the heat of the deep tissue to the upper and lower tissue, through the dilation of the skin vascular heat, so the more blood flow through the skin and blood vessels, the more heat dissipation. If the heat is greater than heat or heat blocked, the body has excessive heat accumulation, which produces high heat stroke.