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生理学的主要内容:机体将物质代谢的尾产物和不需要或过剩的物质(包括进入体内的异物和药物)排出体外的过程称排泄。排泄的途径有四条:①由呼吸器官排出 CO_2和少量水分;②由大肠排出一些无机盐类和胆色素;③由皮肤、汗腺排出水分以及 NaCl 和尿素等;④由肾脏排出尿,其中排泄物种类多,量也大。因此,肾脏是机体的主要排泄
The main content of physiology: the body metabolizes tail products and unwanted or excess substances (including foreign bodies and drugs into the body) excreted from the body called excretion. There are four ways to excretion: ① by the discharge of respiratory organs and a small amount of water CO2; ② discharge from the large intestine some inorganic salts and bile pigments; ③ by the skin, sweat glands discharge of water and NaCl and urea; ④ excretion of urine by the kidneys, including excrement Many types, quantities are large. Therefore, the kidneys are the main excretion of the body