Chapter 3 Integumentary System
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| skin | largest organ
external covering of the body
protect, regulate, sensation, secretion
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| epidermis | top layer of the skin
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| stratum corneum | outermost horny layer
dead cells filled with protein substance called keratin
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| stratum lucidum | translucent layer
frequently absent
cells are dead or dying
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| stratum granulosum | several layers of living cells in the process of dying
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| stratum germinativum | living cells capable of mitosis or cell division
melanin is formed here
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| dermis | true skin beneath epidermis
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| upper or papillary layer of dermis | parallel rows of papillae
produce finger prints
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| lower or reticular layer of dermis | white fibrous tissue that supports blood vessels
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| subcutaneous tissue | attaches dermis to underlying structures
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| hair | thin thread like
develop within a follicle or socket
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| hair papilla | base of each follicle
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| pilomotor muscle | attaches to the side of each hair follice
responsible for goose pimples
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| nails | composed of hard keratin
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| lunula | crescent shaped white area of the nail
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| eponychium | cuticle of the nail
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| sebaceous glands | oil secreting glands
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| sweat or sudoriferous glands | secrete sweat and cool the body
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| acne | inflammatory condition of sebaceous glands and hair follicles
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| acrochordon | skin tags
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| actinic dermatitis | inflammation of the skin caused by exposure to radiant energy
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| albinism | absence of pigment in the skin, hair and eyes
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| alopecia | baldness
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| anhidrosis | without sweat
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| autograft | graft of skin taken from one part of the body and applied to another part
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| avulsion | forcibly tearing off a part of the body
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| basal cell carcinoma | epithelial malignant tumor of the skin
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| bite | body surface is torn by an insect or animal
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| boil or furuncle | acute painful nodule
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| bulla or bleb | a large blister
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| burn | injury to tissue caused by heat
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| callus | hardened skin
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| candidiasis | yeast infection
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| carbuncle | cluster of boils
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| causalgia | intense burning pain
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| cellulitis | inflammation of cellular or connective tissue
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| cicatrix | scar left after the healing of a wound
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| comedo | blackhead
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| corn | horny induration and thickening of the skin on the toes
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| cutaneous | the skin
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| cyst | a bladder or sac
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| decubitus | lying down or a bedsore
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| decubitus ulcer | bedsore or pressure ulcer
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| Stage 1 of bedsore | reddened are when pressed does not turn white
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| Stage 2 of bedsore | skin blisters and open sore
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| Stage 3 of bedsore | crater
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| Stage 4 of bedsore | deep damage to muscle and bone
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| dehisence | separation or bursting open of a surgical wound
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| dermatitis | inflammation of the skin
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| dermatome | instrument used to cut the skin for grafting
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| dermomycosis | a skin condition caused by a fungus
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| ecchymosis | blood seeps in the skin causing discoloration
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| eczema | inflammatory skin disease of the epidermis
scaly and itching rashes
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| erythema | redness of the skin
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| erythroderma | abnormal redness of the skin occurring over widespread areas of the body
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| eschar | scab
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| excoriation | abrasion of the epidermis by scratching
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| exudate | production of pus or serum
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| folliculitis | inflammation of follicles
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| herpes simplex | inflammatory skin disease caused by herpes virus
cold sore or fever blister
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| hidradentis | inflammation of the sweat glands
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| hives or urticaria | itching and burning swellings
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| hyperhidrosis | excessive sweating
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| hypodermic | under the skin
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| icteric | jaundice
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| impetigo | skin infection marked by vesicles or bullae
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| integumentary | skin
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| intradermal | within the skin
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| jaundice | yellow
excessive bile
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| keloid | overgrowth of scar tissue
excessive collagen formation
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| lentigo, freckle, macule | flat, brownish spot
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| leukoderma | localized loss of pigmentation
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| leukoplakia | white spots or patches formed on tongue or cheek
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| lupus | destructive type of skin lesion
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| melanocarcinoma | a cancerous tumor that has black pigmentation
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| melanoma | a malignant black mole or tumor
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| skin cancer | malignant cells in epidermis
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| squamous cell cancer | common skin cancer
flat scaly cells on surface
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| basal cell cancer | common skin cancer
round cells
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| melanoma cell cancer | more serious skin cancer
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| miliaria | prickly heat rash
common in infants
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| mole, nevus | pigmented, elevated spot above the surface of the skin
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| onychitis | inflammation of the nail
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| onychomycosis | condition of the nail caused by a fungus
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| pachyderma | thick skin
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| paranychia | infectious condition of the marginal structures around the nail
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| pediculosis | infestation of lice
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| petechia | small, pinpoint purplish hemorrhagic spots on the skin
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| pruritus | severe itching
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| psoriasis | chronic skin disease
pink or dull red lesions surmounted by silvery scaling
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| purpura | purplish discoloration caused by blood seeping into the tissues
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| rhytidoplasty | plastic surgery for wrinkle removal
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| roseola | rose colored rash
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| rubella | systemic disease caused by a virus and characterized by a rash and fever
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| rubeola | measles
contagious, fever, red spots
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| scabies | contagious with papules, pustules and intense itching
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| scar | mark left by the healing of a wound
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| scleroderma | hardening of the skin
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| seborrhea | excessive flow of oil from the sebaceous glands
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| sebum | oil secretion of sebaceous glands
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| senile keratosis | condition in older people
dry scaling skin due to exposure to the sun
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| striae | streaks or lines
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| subcutaneous | below the skin
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| subungual | below the nail
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| taut | tight
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| telangiectasia | birthmark
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| thermanesthesia | not able to distinguish between hot and cold
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| tinea, ringworm | contagious disease
localized scaly round patches
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| trichomycosis | fungus condition of the hair
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| ulcer | open lesion or sore
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| varicella or chickenpox | contagious viral disease
feer, red spots and crusts
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| vitiligo | milk white patches
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| wart | elevation of viral origin
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| wound | injury to soft tissue
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| xanthoderma | yellow skin
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| xanthoma | yellow tumor
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| xeroderma | dry skin
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| xerosis | abnormal dryness of the skin
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