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问,尿怎样产生,经过哪些管道排出体外?请应用解剖知识解释三杯尿试验的意义是什么? 答:正常情况下,流经肾小球细血管中的血液,除血细胞、大分子蛋白质、多糖、脂类等外,其它成分可通过滤过屏障进入肾小球囊内,滤过液成为原尿。两肾每日累计原尿约为180升。这些原尿通过肾小管时,肾小管上皮有对其进行选择性重吸收的作用,并有分泌和排泄作用,最后形成终尿,其量
Ask, how urine generated, after what channels excreted? Application of anatomical knowledge to explain what the significance of the three cups of urine test? A: Under normal circumstances, the blood flowing through the glomerular capillaries, in addition to blood cells, macromolecular proteins, Polysaccharides, lipids, etc., other components can enter the glomerular capsule through the filtration barrier, the filtrate to become the original urine. The cumulative daily urine of the two kidneys is about 180 liters. These original urine through the renal tubules, tubular epithelial selective reabsorption of its role, and secretion and excretion, and finally the formation of urine, the amount