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Functions of Skin
Protection, sensory, temperature control, secretion
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Epidermis
first layer cellular membrane contains keratin
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Dermis
second layer fibrous connective tissue contains collagen
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Subcutaneous Layer
third layer contains fat tissue
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basal layer
produces melanocytes
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Adipocytes or Lipocytes
fat cells
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Hair fiber is composed of?
Keratin
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Lunula
moon shaped whitish region at the base of the nail
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Cuticle
narrow band of epidermis at base of nail
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Sebaceous Glands
Release oily substances
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Macule
Flat lession; Freckles and moles
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Polyp
Growth extending from the surface of mucous membrane
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Pustule
Papule containing pus, small abscess
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Vesicle
small collection of clear fluid; blister
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Wheal
Smooth, edematous (swollen) papule or plaque that is redder or paler than the surrounding skin
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Ecchymosis, ecchymoses(plural)
bluish-purplish mark (bruise) on the skin
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Petechia, petechiae(plural)
Small, pinpoint hemorrhage
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Urticaria (Hives)
Acute, Allergic reactions in which red, round wheals develop on the skin
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Acne
chronic papular and pustular eruption of the skin with increased production of sebum
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Eczema
Chronic or acute atopic dermatitis
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exanthematous viral disease
rash of the skin due to a viral infection. (rubella, rubeola, and varicella)
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Impetigo
contagious pyoderma
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psoriasis
itchy, scaly, red plaque covered by silvery gray scales
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scabies
contagious, parasitic infection of the skin with intense pruritus
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Systemic Lupus Erythematosus
chronic autoimmune inflammatory disease of collagen in skin, joints, and internal organs
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tinea
infection of the skin caused by a fungus
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vitiligo
loss of pigment in areas of the skin (leukoderma)
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Callus
increased growth of cells in the keratin layer of the epidermis caused by pressure or friction
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keloid
hypertrophied, thickened scar
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Nevus, Nevi(plural)
moles
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Dysplastic nevi
moles that may progress to form skin cancer
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Verruca
Epidermal growth (wart) caused by a virus
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basal cell carcinoma
malignant tumor of the basal cell layer of the epidermis
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cryosurgery
using subfreezing temperatures liquid to destroy tissue
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Mohs micrographic surgery
thin layers of malignant tissue are removed, and each is examined under a microscope
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diaphoresis
profuse sweating
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