Question

Question 3
Given below is a diagramatic sketch of the vertical section of the human skin.
(a)
Study the diagram and answer the questions that follow:
7
6
NERVE
2
BLOOD
VESSEL
5
4
(i) Label the
Label the parts numbered 1-8.
(ii) State one main function of each of the following parts:
Part 1
Part 2
• Part 3​

Answer 1

Answer:

Pls insert a picture too.

Explanation:

a) The labels are as follows:

1 - Sweat pore

2 - Sebaceous gland

3 - Sweat gland

4 - Fat

5 - Dermis

6 - Stratum malpighian

7 - Stratum corneum

8 - Epidermis

9 - Hair

b) Part 2 in the given figure is sebaceous gland. Its main function is to produce sebum to help keep the skin moist.

Part 3 in the given figure is sweat gland. Function of the sweat gland is to secrete sweat - a transparent liquid that is composed of water, salts that are required to regulate body temperature.

Part 4 in the given figure is Fat. The skin stores food in the form of a fat layer

Part 9 in the given figure is hair. Hair provides a touch sensation. It can also be used in the forensic study.

From the above parts, the one which has atleast three functions is:

Sebaceous gland -

∙ Protects skin

∙ Produces sebum that lubricates hair and skin of mammals.

∙ Sebum also protects from bacterial and fungal infections.

c) Part 4 in the given figure is fat. The common function can be that fat preserves act as food reserves and a heat insulating layer. They act as shock absorbers.