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人的大脑中有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,通过汗腺活动调节身体的温度。人到老年,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、耐热能力远远超过老年人;在病理条件下,老年人的体温变化也与年轻人有很大不同。一般来说,老年人的体温比年轻人的体温低0.5～0.7摄氏度,这是因为老年人的代谢功能低下,体内产热相对不足;而年轻人身体代谢旺盛,产热较多,体温比老年人要高一些。临床上,儿童发烧
There are nerve centers in the human brain that regulate body temperature. With changes in the external environment temperature, the thermoregulatory center sends instructions to vasodilate or constrict the body temperature through sweat gland activity. People to the elderly, the function of the central thermoregulation decreased significantly, therefore, the temperature changes in the elderly and young people are very different. Under normal physiological conditions, young people are far more cold-tolerant and heat-resistant than the elderly. Under the pathological conditions, the temperature changes of the elderly are also very different from those of young people. In general, the elderly body temperature lower than the temperature of young people 0.5 to 0.7 degrees Celsius, this is because the elderly metabolic dysfunction, the relative lack of heat in the body; and young people with strong metabolism, more heat, body temperature than the elderly People are taller. Clinically, children have a fever