Write down the functions of kidney.

Explanation

Functions of kidney:
1. The internal environment of the body is maintained due to kidney. The homeostasis is maintained by constant and delicate balance kept by kidney.
2. Kidney extracts all the nitrogenous excretory waste products from the blood and thereby purify the blood.
3. The sodium, potassium and chloride ion concentration of the body/blood is maintained by kidneys.
4. Acid base balance of the body is maintained.
5. Composition of blood is maintained by regulation water content of the body.
6. Unwanted foreign substances like dyes, pigments, excess of vitamins etc. are eliminated by the kidneys.