Question

what is epidermis......
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Answer 1

Answer:

the epethelium surface of the skin

also the outer layer of tissue of plants

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Answer 2

Answer:

The epidermis is the outer part of the skin.

It is formed of stratified epithelium piled up layer after layer at places, the epidermis becomes thick and hard as on the palms, soles and specially on the heels.

It is devoid of blood vessels at all places.

The epidermis shows three regions or sublayers depthwise:

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

The cornified layer is the outermost layer consisting of several piled up layers of flattened dead cells.

The cells are made of a fibrous structural protein called keratin.

The granular layer is a very thin middle layer consisting of two or three sublayers of flattened cells.

The malpighian layer is the inner most region of the epidermis. It's cells can actively divide to produce new cells which process and shift outward to replace the worn out cells of the outermost qualify the layer.