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Science Olympiad» Disease Detectives Event » National Event Exercises
Skin Cancer Module: Practice Exercises

Skin Cancer: Module 1
Illustration Layers of Skin

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This illustration shows the different layers of skin:

  • The bottom layer is made up of fat cells. These fat cells form the subcutaneous tissue.
  • Above the fat cells, in the reticular layer, hair follicles and sweat glands begin and continue through the remaining layers to the surface.
  • A papillary/reticular dermal interface separates the reticular layer and the layer above it, which is the papillary layer.
  • Above the papillary layer is the uppermost layer, the epidermis. The epidermis is comprised of squamous cells and melanocytes interspersed through basal cells.

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This page last reviewed August 27, 2004

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