Your epidermis is the outermost layer of skin on your body. It contains five different layers, and it helps protect your body, among additional functions.
The epidermis serves as a barrier to protect the body against microbial pathogens, oxidative stress (UV light), and chemical compounds, and provides mechanical resistance to minor injury.
The epidermis is the thin, outermost layer of the skin, providing a protective barrier against environmental hazards. Composed primarily of keratinized stratified squamous epithelium. Contains no blood vessels; nutrients diffuse from the underlying dermis.
Epidermis, in zoology, protective outermost portion of the skin. There are two layers of epidermis, the living basal layer, which is next to the dermis, and the external stratum corneum, or horny layer, which is composed of dead, keratin-filled cells that have migrated outward from the basal layer.
The epidermis is the top layer of skin that protects against toxins and infection. There are four main layers in the epidermis, and a fifth layer is found in thick skin on palms and soles. In the bottom layer of the epidermis, skin cells divide and push older cells up to the surface where they die.
It is composed mainly of keratinocytes, cells that produce keratin, a protein that strengthens the skin and helps in its protective function. The epidermis is a thin, avascular (without blood vessels) layer, meaning it relies on the dermis for nourishment through diffusion.
The main function of the epidermis is to protect the deeper tissues from water, microorganisms, mechanical and chemical trauma, and damage from UV light. In addition, the epidermis continuously makes new skin that replaces the old skin cells and produces melanin that provides skin color.