Give a brief, outline of the process of excretion by the kidneys in human beings
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The function of kidneys is to remove the poisonous substance urea, other waste salts and excess water from blood and excrete them in form of yellowish liquid called urine. when blood passes through glomerrulus small substance like glucose amino acids salts urea passes through it but not proteins and blood vessels.
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The kidneys filter unwanted substances from the blood and produce urine to excrete them. There are three main steps of urine formation: glomerular filtration, reabsorption, and secretion. These processes ensure that only waste and excess water are removed from the body.
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