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尿是怎样生成的 人每天都需饮用一定量的水分(包括食物中的水分),经过胃肠生理功能的作用,其中一部分吸收入血液循环。尿是人体的排泄物之一,人体的泌尿器官包括肾、输尿管、膀胱及尿道,各司其职。流入肾脏的血液约占心搏出量的25％。肾脏将收集来自血液循环系统的液体及体内已完成代谢活动后不再需要的化学物质,如含氮的废物及毒物,经滤过、重吸收、排泌等一系列过程生成尿液,再由输尿管将尿液持续不断的输注入膀胱,最后沿尿道排出体外。成人每日尿量为1500～2000毫升,儿童随年龄不同而异,婴儿400～500毫升,幼儿500～600毫升,学龄前儿童600～800毫升,学
People who produce urine are required to drink a certain amount of water (including water in food) every day, and some of them are absorbed into blood circulation after being absorbed into the gastrointestinal tract. Urine is one of the body’s excrement, the body’s urinary organs including kidney, ureter, bladder and urethra, each doing its part. Blood flowing into the kidneys accounts for about 25% of the stroke volume. The kidneys will collect liquid from the blood circulatory system and chemicals that are no longer needed after the metabolic activity has been completed in the body, such as nitrogen-containing wastes and poisons, urine generated by a series of processes such as filtration, reabsorption, excretion, Ureteral continuous infusion of urine into the bladder, and finally excreted along the urethra. Adults daily urine output of 1500 ~ 2000 ml, children vary with age, infants 400 to 500 ml, children 500 to 600 ml, preschool children 600 to 800 ml, learn