. explain how waste is removed from body through excretory system in humans.
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Key Points On Human Excretory System
Kidneys filter the blood and urine is the filtrate obtained. Urine passes to the urinary bladder via ureter and is expelled out of the body. This is known as micturition. Kidneys also regulate the osmotic pressure of a mammal's blood through excessive purificatioN.
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Humans have two kidneys and each kidney is supplied with blood from the renal artery. The kidneys remove from the blood the nitrogenous wastes such as urea, as well as salts and excess water, and excrete them in the form of urine. This is done with the help of millions of nephrons present in the kidney.
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