Question

Given below is a diagrammatic sketch of the vertical section of the human skin.

State one main function of each of the following parts:

Part 2 ___________

Part 3 ___________

Part 4 ___________

Part 9 ___________

Name any one of the above parts which has at least three functions.

Answer 1

Function of part 2 (Sebaceous gland): It produces oil called sebum, which plays a role in keeping our skin moist. 

Function of part 3 (Fat): The skin reserves food in the form of a layer of fat.

Function of part 4 (Sweat gland): It secretes a transparent liquid (sweat) containing water and salts from the body in order to regulate body temperature.

Function of part 9 (Hair): Hair provide a sensation of touch and are also helpful in forensic investigations.

Part which has at least three functions:

Sebaceous gland:

1. Skin protection
2. Secretes an oily substance known as sebum that lubricates hair and skin of mammals
3. Presence of sebum enables to experience wet skin even when we have not taken bath for days.