Question

What are the functions of the kidneys?

• A. Excretion of urea
• B. Excretion of extra water
• C. Retention of water
• D. Excretion of salts

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A

Excretion of urea

B

Excretion of extra water

C

Retention of water

D

Excretion of salts

Human beings possess a pair of kidneys, on both sides of the vertebral column adjoining the muscles in the abdominal cavity. The functions of the kidneys are to excrete nitrogenous wastes such as urea, remove excess water and salts; and retain water when the amount of water in the body is less.