Question

define epidermis.................

Answer 1

Answer:

epidermis - outermost of the three layers that make up the skin,in the inner layers being the dermis and hypodermic.

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Answer 2

Answer:

• The epidermis is the outer and the thinner part of the skin.

• It is formed of stratified epithelium.

• It is joined layer after layer.

• In some places, the epidermis is thick and hard such as on the Palms, soles and on the heels.

• It has three sublayers depthwise

1. Outermost cornified layer
2. Middle granular layer
3. Inner malpighian layer.

• The outermost to cornified layer is composed of flattened dead cells performing protective function.

• These cells are made up of a fibrous structural protein called Keratin which are found in our nails, hairs.

• The middle granular layer is a very thin middle layer which consists of two or three flattened calls which gives the way to the outermost cornified layer.

• The malpighian layer is the innermost layer and region of the epidermis.

• It is also called as germinative layer.

• Its cells actively divide and produce new cells.