Question

21. Which one of the following is not a function of kidney

a) It removes toxic substances

b) It regulates osmotic pressure/water balance of the body.

c) It regulates pressure of blood.

d) It regulates pH of the blood.

Answer 1

All are the functions of kidney

Kidney removes toxic substances, drugs, excess vitamins from the blood.
Kidney removes excess water from the body thus maintaining osmotic pressure.
Kidney controls the fluid balance in the body, therefore, it maintains blood pressure.
Kidney removes excess of acids and alkalies from the blood to maintain proper pH of the blood.