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→Epidermis
===Epidermis===
===Epidermis===
The epidermis is a stratified squamous epithelium and is composed of 4 cell layers anchored to a basal lamina of connective tissue.
*'''Stratum Corneum'''
The outer layer, ''stratum corneum'', consists of cells filled with keratin filaments and proteins that form a cell envelope resistant to solvents and enzymes; there is also a permeability barrier to water and ions. The cells of the stratum corneum are embedded in a lipid-rich matrix which helps to hold the cells together, while the desmosomes that were present in lower layers have disappeared.
===Dermis===
===Dermis===