Stratum corneum

See also: Cornea (homonymy)

The Stratum corneum or layer cornea , is the layer furthest away from the skin, and includes/understands the surface of the Peau. It is made up mainly of dead cells called Cornéocyte S whose loss of the cellular core results from épidermique differentiation.

The cells of the stratum corneum contain β-keratin, a protein which helps to keep the skin hydrated by preventing the evaporation water. Moreover, these cells can also absorb water while helping with the hydration and that makes it possible to explain why wrinkle S appear on the skin of human and other animals when they are plunged in water during a certain time.

These cells are continuously eliminated and replaced by the cells of a sub-base. It is organized in several layers. The number of layers of cells which composes the cornea layer varies according to the area of the body observed. 4 to 8 cellular bases on average, one counts of them 15 to 20 on the level of the skin of the back or the abdomen, several hundreds on the level of the plant of the feet. The thickness of the cornea layer thus varies with the needs.

The cornea layer consists of coupled cells the ones with the others forming of the flexible and resistant plates. This épidermique layer is very low in water, it is impregnated of épidermique grease.

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