Question

Write a note on the skin.

Answer 1

1. Skin is the outermost covering of the body. It stretches all over the body in the form of a layer.
2. It accounts for 15% of an adult’s human body weight. There are many structures and glands derived from the skin. It eliminates metabolic wastes through perspiration.
3. The human body functions normally at a temperature of about 37 C.
4. When it gets hot sweat glands start secreting sweat, which contains water with small amounts of other chemicals like ammonia, urea, lactic acid, and salts (mainly sodium chloride).
5. The sweat passes through the pores in the skin and gets evaporated.