Question

What is the main function of the kidney in animals?

Answer 1

Kidneys are the main organs in the excretory system of animals, which take part in the filtration of the blood before the urine is formed.

Functions of kidney:

1. The most important function of the kidney is to filter the blood for urine formation.
2. The kidneys help to maintain the water and salt level of the body by working together with the pituitary gland.
3. It excretes toxic metabolic wastes like urea and uric acid into the urine.
4. It secretes a number of hormones and enzymes such as: Erythropoietin, Renin and Calcitriol.
5. It maintains the acid-base balance of the body by reabsorbing bicarbonate from urine and excreting hydrogen ions and acid ions into the urine.