New Tissue Formation: Layers of the Epithelium
Repair of the epithelium is needed to keep the undesirables out and the vital essentials -- body fluids and electrolytes, for example -- from escaping. Reconstruction of the epithelium of the skin is a Herculean task as the epidermis is composed of four layers: the basal layer, which lies just above the dermis, the prickle cell layer, the granular layer, and finally the stratum corneum, which is composed of dead cells and keratin.