Skin Layers

- Aug 14, 2018-

4. Spinous layer: the thickest layer of the epidermis, consisting of 4-8 layers of polygonal cells with spinous processes, has the function of division, can participate in wound repair, reproduction - regeneration. 

5. Basal layer: composed of cylindrical basal cells, also known as cylindrical cell layer adjacent to the dermis, by the dermal papilla of the capillary nutrition for cell division and regeneration, is the source of epidermal cells in each layer.