Question

urine formation in kidney​

Answer 1

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Answer 2

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Role of kidney in urine formation

• The kidneys are made up of millions the microscopic unit called nephrons. They are founded by network of blood capillaries.
• The main function of the nephron is to filter the blood purifier it and to produce urine.
• Blood which enter the kidney through the renal artery contains unwanted Waste substance as well as some useful substance.
• Nephrons remove the waste substance such as excess water, mineral salt and urea from the blood and convert into urine.
• They also re-absorb certain useful substances like glucose, sodium and potassium ions that are needed by the body and put in back it into the blood.
• The blood that finally leaves the kidney is pure, devoid of all wastes and contains the right amount of water and other useful substances required by the body.
• The urine that is formed in the kidney is sent to the ureters for its further temporary collection in the urinary bladder.
• When the bladder is full the urine is expelled to outside through the urethra.
• This process of expulsion of the urine to the outside is called urination.