Epidermis
*The article was translated into English using automatic translation. The editors are working on its improvement.
Epidermis (from the Greek ἐπί “on, with” + δέρμα “skin”) is the outer layer of the skin . It is a multilayer derivative of epithelium. It is a stratified squamous epithelium. It consists of five layers located above the dermis and primarily perform a barrier function.
The epidermis is constantly renewed. A similar effect is associated with specific transformations and migration of keratinocytes from deep to external layers during their differentiation. Together with the peeling scales, chemical and biological pathogens are removed from the surface of the skin. The epidermis contains some components of the immune system.