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Question

Enumerate in a tabular form the different structures found in the epidermis and dermis of the human skin respectively.

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Solution

Layer of the skin
Structures found

Functions

Epidermis
Stratum corneum

Contains flattened dead cells made of keratin. This prevents invasion of disease causing microorganisms.

Granular layer
Contains two to three sub-layers of flattened cells which eventually give rise to stratum corneum.
Malpighian layer - contains melanin
  • Replaces worn-out cells of outer cornified layer
  • Melanin responsible for the skin tone and colour and prevent from the harmful effects of UV rays

layer of skin
Structure of found Functions
Dermis Blood vessels Provide oxygen and nourishment to the skin
Nerve fibres and sense organs
Sensations of touch and pain
Hair follicles
  • Hair grows from hair follicles. Hairs provide insulation to the body.
  • Hairs also provide a sensation of touch as the nerve fibres extend up to the base of the skin.
Sweat glands Produce sweat that helps in regulating the body temperature.

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