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Introduction to Skin

​Skin is the largest organ of human body. The surface area of skin is 1.7sq.m. and it constitutes 16-20% of total body weight.

Human skin is of two types:

  • Glabrous skin (non-hairy) e.g. Palms & Solesa
  • Non Glabrous (hair bearing)

It varies in thickness in different areas.

  • Thickest skin: on palms of hand and soles of feet
  • Thinnest and delicate on upper eyelids & under eyes.


Structure of Skin

Skin is divided into 3 basic layers-

1.   Epidermis

2.   Dermis

3.   Subcutaneous layer


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