Define Excretion in human beings. Draw structure of nephron qnd explain it.
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The kidneys are excretory organs that perform three main functions to produce urine, filtration, reabsorption and secretion. A nephron consists of a renal corpuscle, which lies in the cortex, and a long tube which collects and processes the filtered fluid, called a renal tubule. ...
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The process of removal of unwanted and harmful metabolic waste substances is called excretion. The four organs of urinary system from above to downward are: Kidney.
A nephron is the filtration unit of the kidney. It consists of a tubule which is connected with collecting duct at one end and a cup-shaped structure at the other end. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.
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