Epidermis Definition Anatomy

Epidermis the structurally simple outermost layer of the skin containing no nerves blood vessels or hair follicles and acting as a rapidly replaceable surface. The outer protective nonvascular layer of the skin of vertebrates covering the dermis.

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The upper or outer layer of the two main layers of cells that make up the skin.

Epidermis definition anatomy. The epidermis is the outermost layer of the skin. The outer nonsensitive and nonvascular layer of the skin of a vertebrate that overlies the dermis. Epidermis synonyms epidermis pronunciation epidermis translation english dictionary definition of epidermis.

An integument or outer layer of various invertebrates. The epidermis is mostly made up of flat scale like cells called squamous cells. Inside it keratinocytes cells are present which are accountable for the production of the specialized protein called keratin.

Epidermis definition is the outer epithelial layer of the external integument of the animal body that is derived from the embryonic epiblast. It is at its thinnest on the eyelids measuring just half a millimeter and at its thickest on the palms and soles at 15 millimeters. They initiate from the basal layer of skin which is the deeper most layer and it progressively moves up to the external layer.

The thickness of the epidermis varies depending on where on the body it is located. Under the squamous cells are round cells called basal cells. The epidermis is the outermost of the three layers that make up the skin the inner layers being the dermis and hypodermis.

Keratinocytes cells present in reformist stages of differentiation from the deepest to the superficial layers of cells. The epidermis that is exposed to air is covered with a protective substance called cuticle. In most plants the epidermis is a single layer of cells set close together to protect the plant from water loss invasion by fungi and physical damage.

The deepest layer of the epidermis is the basal cell layer. The epidermis layer provides a barrier to infection from environmental pathogens and regulates the amount of water released from the body into the atmosphere through transepidermal water loss. Above this is the prickle cell layer.

Skin Parts Function And Anatomy Kenhub