A) Excretion
B) Osmoregulation
C) Regulation of blood volume
D) Destruction of dead blood corpuscles
Correct Answer: D
Solution :
Human kidneys are bean shaped, each with a notch the hilus on its inner side. A kidney has about ten lakh, structural and functional units called nephrons or uriniferous tubules. The major functions of kidney are: (i) Elimination of nitrogenous waste. (ii) Removal of excess of water (osmoregulation). (iii) Control of fluid balance in the body (iv) The kidney secrete the enzyme renin (different from rennin in stomach) which changes the plasma protein angiotensinogen into angiotens in II. The Kupffefs cells, of the liver engulf the disease causing microorganisms, dead cell and foreign matter.
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