每个人的大脑中都有一个调节体温的神经中枢,随着外界环境温度的变化,体温调节中枢发出指令,让血管舒张或收缩,再通过汗腺的活动来调节身体的温度。人到了老年以后,体温调节中枢的功能明显减退,因此,老年人的体温变化与年轻人有很大的区别。在正常生理条件下,年轻人的耐寒、耐 Everyone has a nerve center in the brain that regulates body temperature. As the temperature of the outside world changes, the thermoregulatory center gives instructions to the blood vessels to dilate or constrict, and then regulates the body’s temperature through sweat gland activity. After the elderly, the function of the thermoregulatory center is significantly diminished. Therefore, the changes in body temperature in the elderly are quite different from those in the young. Under normal physiological conditions, young people are hardy and resistant