C C 306M Chapter Notes - Chapter 3: Dysplastic Nevus, Comedo, Pressure Ulcer
20 Aug 2013
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The integumentary system consists of the following tissues: Houses receptors for the sense of touch, including pain and sensation. Epidermis: consists of several layers of stratified squamous (scale-like) epithelium, cells are produced in the innermost (basal) layer. Moving the older cells up toward the surface: cells that are pushed up flatten, fill with keratin [hard protein substance] and die. Layers of packed dead cells accumulate in the outermost (squamous) layer. Dermis: connective tissue layer, contains blood vessels, nerves and other structures, collagen fibers make the skin tough and elastic. Subcutaneous layer: blow the dermis, composed of loose connective tissue and adipose (fatty) tissue. Epithelium cells covering external and internal surfaces of the body. Epidermis thin outer layer of the skin. Squamous cell layer flat, scale-like epithelial cells comprising the outermost epidermis. Melanocyte cell in the basal layer that gives color to the skin. Melanin dark brown to black pigment contained in melanocytes.
