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Excretory Products and their Elimination

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Give the functions of kidney.

Functions of kidney :

1. Excretion : Kidneys pass out metabolic waste products.

2. Regulation of pH value : Kidneys help in the removal of excess of acids from the blood and thus help in regulating pH value.

3. Osmoregulation : Kidneys help in the maintenance of the osmotic balance in the body.

4. Secretion of renin : The kidneys secrete renin which converts angiotensinogen into angiotensin. It stimulates the limbs of uriniferous tubules to absorb Na+ ions from blood.

5. Elimination of excess of salts : The kidneys elminate excess of salts from blood and thus help in regulating blood pressure.

6. Regulation of blood pressure : By controlling the fluid balance in the body, kidney nephron regulates blood pressure.

7. Homeostasis : As kidney removes various unwanted material from the blood, it helps in keeping the internal environment of the body constant.

8. Elimination of other substances : Kidney removes toxic substances like drugs, pigments etc. from the blood.

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What is Bowman's capsule?

The double walled cup like structure present at the starting of the renal tubule is Bowman's capsule. It encloses the glomerulus capsule. 
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What is glomerulonephritis ?

Glomerulonephritis is the inflammation of glomeruli of the kidney. 
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Name three uricotelic animals.

The uricotelic animals are
1. Birds
2. Reptiles
3. Insects

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What is the ultimate method for the correction of acute renal failure?

Kidney transplant.
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 What is uremia ?

Uremia is the accumulation of urea in the blood due to the malfunctioning of the kidneys. The urea accumulation is harmful and may lead to kidney failure. 

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