The epidermis is the outer layer of the skin, consisting of stratified squamous epithelium.
This is the outermost layer of skin that protects deeper layers and internal organs from external influences. The name comes from the Greek words “epi” - on, above and “derma” - skin.
The epidermis consists mainly of keratinocytes - cells that produce keratin. Keratin gives the epidermis strength and elasticity, protecting the body.
The epidermis is regularly renewed, cells are born in the lower layers of the epidermis, gradually move to the surface, become keratinized and eventually exfoliate. This process is called desquamation and occurs approximately every 4-5 weeks.
Thus, the epidermis performs a critical protective function, serving as an outer barrier to various external influences, while at the same time regularly renewing itself to maintain its structural integrity.