Respuesta :
Keratinized stratified squamous epithelium differs from the function of nonkeratinized stratified squamous epithelium in that non-keratinized epithelium is permeable to water whereas cornified epithelium is impermeable to water. Moreover, the keratinized epithelium is an effective barrier, whereas the non-keratinized epithelium is a less effective barrier.
What is keratinized epithelium?
Keratinized epithelium is a stratified squamous epithelium found in the skin, the epidermis of the palms and soles, and masticatory mucosa. The keratinized epithelium forms an effective barrier. Its surface layer consists of dead cells. Keratin deposits on the surface. The cytoplasm of surface cells is replaced by keratin proteins. The keratinized epithelium is therefore dry and impermeable to water. It also provides better protection against scratches.
What is non-keratinized epithelium?
The non-cornified epithelium is a stratified squamous epithelium found in the lips, oral mucosa, alveolar mucosa, soft palate, the underside of the tongue, and the floor of the mouth. Unlike keratinized epithelium, the non-keratinized epithelium is moist and contains living cells in the superficial layer.
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