Describe the excretory system of man, giving the structure of a nephron
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humans, the excretory system consists of a pair of kidneys, a pair of ureters, urinary bladder and urethra. A nephron is the basic filtration unit of the kidney. ... The blood is filtered by the glomerulus and enters the Bowman's capsule where the podocytes help in the filtration and the glomerular filtrate is formed.
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The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body. The dual function of excretory systems is the elimination of the waste products of metabolism and to drain the body of used up and broken down components in a liquid and gaseous state. In humans and other amniotes (mammals, birds and reptiles) most of these substances leave the body as urine and to some degree exhalation, mammals also expel them through sweating.
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