Question

how does excretion occurs in human beings

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Answer 1

Answer:

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. The filtrated blood is carried away from the kidneys by the renal vein (or kidney vein).

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Answer 2

• The human excretory system consists of a pair of kidneys,a pair of ureters ,the urinary bladder and the urethra. 3. Urine is formed by the kidneys by the sperating the waste and unwanted excess substances from the blood.The urea produced in the liver comes in to the blood.

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