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Horny, or cornified, layer composed of protein. It is contained in the hair, skin, and nails
Tiny, coiled, tubular structures that emerge through the pores on the skin's surface and secrete sweat
Sudoriferous (sweat) glands
Secrete sebum (oil) into the hair follicles where the hair shafts pass through the dermis
Compressed, keratinized cells that arise from hair follicles, the sacs that enclose the hair fibers
Originate in the epidermis. Nails are found on the upper surface of the ends of the fingers and toes. The white area at the base of the nail is called the lunula, or moon
Dry skin (a mild form of a cutaneous disorder characterized by keratinization and noninflammatory scaling)
Define: Actinic keratosis
A precancerous skin condition of horny tissue formation that results from excessive exposure to sunlight. It may evolve into a squamos cell carcinoma.
Congenital hereditary condition characterized by partial or total lack of pigment in the skin, hair, and eyes
Define: Basal cell carcinoma (BCC)
Epitheliam tumor arising from the epidermis. It seldom metastasizes but invades local tissue. Common in individuals who have had excessive sun exposure.
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