Physiology of urine formation

1.	Physiology of urine formation
Answer» The kidneys filter unwanted substances from the blood and produce\xa0urine\xa0to excrete them. There are three main steps of\xa0urine formation: glomerular filtration, reabsorption, and secretion. These processes ensure that only waste and excess water are removed from the body.\xa0Urine is one of the body\'s waste products. It is primarily composed of water and urea. Urea is a special nitrogenous waste compound that the body must routinely remove. Urine formation occurs in the kidney in three stages:\xa0filtration, reabsorption, and secretion.\xa0Formation\xa0of\xa0urine\xa0is a process\xa0important\xa0for the whole organism. Not only acid-base balance is modulated by it, but also blood osmolarity, plasma composition and fluid volume, and thus it influences all cells in our body.

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