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PLZZZZZZZ ANSWER THE QUESTION FASTLY...PLZZ ANSWER NOTEBOOK

Answer 1

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⚫ WHAT IS A NEPHRON

The two bean shaped kidneys are situated one on either side of the vertebral column,on the posterior side of abdomen. The functional unit of the kidneys that performs the basic function of filtration is called a nephron.

Each nephron has a cup like, thin walled upper parts called the Bowman's capsule . The network of capillaries in it is called a glomerulus .

The urea produced in the liver comes into the blood.When the urea and containing blood comes into the glomerulus, it is filtered through its capillaries and urea and other similar substances are separated from it.

⚫ HOW URINE IS FORMED

Water molecules and small molecules of some other substances can cross the semipermeable membrane of Bowman's capsule. The solution accumulated in the cavity of Bowman's capsule passes into the tubular part of the nephron.

Here, molecules of water and some other useful substances are reabsorbed into the blood.

Urine is formed from the remaining solution which is full of waste materials. The urine is carried by the ureters and stored in the stored in the urinary bladder.

Afterwards,urine is given out through the urethra . The urinary bladder is muscular and it is under the control of nerves.Hence, we are able to keep a control on urination.

⚫ SOME MORE INFORMATION

Each kidney has approximately 10 lakh nephrons. The approximately 5 litre of blood which is present in a normal healthy person's body is filtered by the kidneys about 400 times every day.

Thus every day, the kidneys filter about 190 litres of blood from which about 1 to 1.9 liters of urine is formed.And the remaining liquid is reabsorbed.

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Answer 2

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