PATHOLOGY

Detailed explanation-1: -The Epidermis. The epidermis is composed of keratinized, stratified squamous epithelium. It is made of four or five layers of epithelial cells, depending on its location in the body. It does not have any blood vessels within it (i.e., it is avascular).

Detailed explanation-2: -The top layer is the epidermis. It protects the other layers from the outside environment. It contains cells that make keratin, which waterproofs and strengthens the skin. The epidermis also has cells with melanin, the dark pigment that gives skin its color.