PSY 2210 Lecture Notes - Lecture 12: Chemotherapy, Candidiasis, Hair Loss
20 Nov 2017
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Document Summary
Think of skin as body"s largest organ system. Covers 20 square feet of surface area in adults. Skin is a sentry that guards body environmental stress; trauma, pathogens, dirt adapts it to other environmental in uences; heat, cold. Beneath these layers is a subcutaneous layer of adipose tissue. Structure and function of skin: protection from environment prevents penetration perception temperature regulation identi cation communication wound repair absorption and excretion production of vitamin d. We have these glands everywhere but our palms and sold. Sweat glands - 2 types: eccrine - produce sweat and apocrine produce a thick milky secretion into the hair follicles of axillae, groin and navel. Apocrine glands become active during puberty and emotional stress. Nails - hard plates of keratin, lunula is the white semilunar area of the nail were new cells are formed. The cuticle works as a gasket to cover and protect the nail matrix.
