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medical ch.5

ch.5 terms

abrasion a scrarping or rubbing away of skin or mucous as a result of friction to the area
abscess a localized collection of pus in any part of the body
albino an individual with a marked deficiency of pigment in the eyes, hair, and skin
alopecia partial or complete loss of hair
amputation the surgical removal of a part of the body or a limb or a part of a limb, performed to treat recurrent infections or gangrene of a limb
basal layer the deepest of five layers of the epidermis
bedsore an inflammation, sore, or ulcer in the skin over a bony prominence of the body-resulting from loss of blood supply & oxygen to the area due to prolonged prssure on the body part
blackhead an open comedo, caused by accumaltion of keratin and sebum within the opening of a hair follicle
blister a small thin-walled skin lesion containing clear fluid, a vesticle
boil a localized pus-producing infection originating deep in a hair follicle, a furuncle
bruise a bluish0black discoloration of an area of the skin or mucous membrane caused by an escape of blood into the tissues as a result of an injury to the area
bulla a large blister
debridement removal of debris, foregin objects, and damaged or necrotic tissue from a wound in order to prevent infection and to promote healing
cyst a closed sac or pouch in or within the skin that contains fluid, semi fluid, or solid material
cyanosis a conition of a bluish discoloration of the skin
cuticle a fold of skin that covers the root of the fingernail or toenail
cutaneous membrane the skin
curettage the process of scraping material from the wall of a cavity or other surface for the purpose of removing abnormal tissue or unwanted material
cryosurgery a noninvasive treatment that uses subfrezzing temperature to freze and destroy the tissue
corium the dermis, the layer of the skin just under the epidermis
contusion an injury to a part of the body without a break in the skin
comedo the typical lesion of acne vulgaris, casued by accumulation of keratin and sebum within the opening of a hair follicle
closed comedo whitehead
open comedo blackhead
collagen the protein substance that forms the glistening inelastic fibers of connective tissue such as tendons, ligaments and fascia
cicatrix a scar, the pale, firm tissue that forms in the healing of a wound
ceruminous gland a mdodified sweat gland that lubricates the skin of the ear canal with a yellowish-brown waxy substance called cercumen (or ear wax)
cercumen ear wax
cellulite a diffuse acute infection of the skin and substance tissue, characterized by localized heat, deepredness, pain and swelling
carbuncle a circumscibed inflammation of the skin and deeper tissues that contains pus, which eventually discharges to the skin surface
dermatitis inflammation of the skin
dermatologist a physician who specializes in the treatment of dieases and disorders of the skin
dermatology the study of the skin
dermis the layer of skin immediately beneath the epidermis, the corium
diaphoresis the secretion of sweat
ecchymosis a bluish-black discoloration of an area of the skin or mucous membrane caused by an escape of blood into the tissues as a result of injury to the area; also known as a bruise or a black-and-blue mark
electrodesiccation a technique that uses an electrical spark to burn and destroy tissue, used primarily for the removal of surface lesions
epidermis the outermost layer of the skin
hair root the portion of a stran of hair that is embedded in the hair follicle
hair follicle the tiny tube within the dermis that contains the root of a hair shaft
gangrene death of tissue, most often involving the extermities
furuncle a localized pus-producing infection orginating deep in a hair follicle, a boil
fistula an abnormal passageway between two tublar organs
fissure a cracklike sore or groove in the skin or mucous membrane
exfoliation peeling or sloughing off of tissue cells, as in peeling of the skin after a severe sunburn
excoriation an injury to the surface of the skin caused by trauma, such as scratching or abrasions
erythroderma redness of the skin due to capillary dilatation
erythremia an abnormal increase in the number of red blood cells
erythema redness of the skin due to capillary dilatation
epithelium the tissue that covers the internal and external surfaces of the body
epidermoid cyst a cyst filled with a chessy material composed of sebum and epithelial debris that has formed in the duct of a sebaceous gland, also known as a sebaceous cyst
kertain a hard fibrous protein found inthe epidermis, hair, nails, enamel of the teeth, and horns of animals
integumentary system the body ystem consisting of the skin, sweat glands and sebaceous glands
integument the skin
icthyosis am inherited dermatologist condition in which the skin is dry, hyperkeratotic(hardend), and fissured-resembling fish scales
hydrocele a collection of fluid located in the area of the scrotal sac in the male
hives circumscribed, slightly elevated lesions of the skin that are paler in the center thab its surrounding edges
histocyte macrophage; a large phagocytic cell(cell that ingests microoraganisms, other cells, and foregin particles)occuring in the walls of blood vessels and loose conective tissue
histamine a substance(found in all cells)that is released in allergic inflammatory reactions
hirsutism excessive body hair in an adult male distribution pattern, occuring in women
heparin a natural anticogulant substance produced by the body tissues
hemangioma a benign(nonmaligant)tumor that consists of a mass of blood vesselsand has a reddish-purple color
hair shaft the visble part of the hair
pimple a papule or pustule of the skin
petechia small, pinpoint hemorrhages of the skin
perspiration the clear, watery fluid produced by the sweat glands
pediculosis infestion with lice
paronychia inflammation of the fold of skin surrounding the fingernail; also called runaround
papule a small, solid, circumscribed elevation on the skin
pachyderma abnormal thicjening of the skin
onychophagia the habit of bitting the nails
oil gland one of the many small glands located in the dermis. its secretions provide oil to the hair and surrounding skin
onychomycsis any fungal infection of the nails
nodule a small, circumscribed swelling protruding above the skin
onycholysis seperation of a fingernail from its bed, beginning at the free margin
nail body the visble part of the nail
urticaria a reaction of the skin in which there is an apperance of smooth, slightly elevated patches(wheals)that are redder or paler than the surrounding skin and often accompained by servere icthing(pruitus)
wheal a circumscribed, slightly elevated lesion of the skin that is paler in the center than its surrounding edges, hives
whitehead a closed comedo, caused by accumulation of keratin and sebum within the opening of a hair follicle
vitilgo a skin disorder characterized by nonpigmented white patches o fskin of varying sizes that are surrounded by skin with normal pigementation
vescile a small thin-walled skin lesion conatining clear fuild, a blister
ulcer a circumscribed open sore or lesion of the skin that is accompained by inflammtaion
sweat the clear, watery fluid produced by the sweat glands; also known as perspiration
xanthaderma any yellow coloration of the skin
xeroderma a chronic skin collection characterized by roughness and dryness
telangiectasis the permanent dilation of groups of superfical capillaries and venules
suborifererous gland a sweat gland
subungual hermatoma a collection of blood beneath a nail bed, usually the result of trauma(injury)
strecth marks linear tears in the dermis that result from overstretching from rapid grwoth
subsutaneous tissue the fatty layer of tissue located beneath the dermis
stratum corneum the outermost layer of the epidermis(consisting of dead cells that have converted to keratin), which continually sluffs off or flakes away
stratum a uniformly thick sheet or layer of cells
stratum basale the layer of skin where new cells are continually being reproduced, pushing older cells toward the outermost surface of the skin
startified layered; arranged in layers
squamous epithelium the single layer of flatterned platelike cells that cover internal and external body surfaces
polyp a small, stalklike growth that protrudes upward or outward from a mucous membrane surface, resembling a mushroom stalk
pores openings of the skin through with substances suach as water, salts, and some fatty substances are excerted
pruitus itching
scales thin flakes of hardend epitheliun shed from the epidermis
purpura a group of bleeding disorders characterized by bleeding into the skin and mucous membranes, small, pinpoint hemorrhages are known as petechia and larger homorrhagic areas known as ecchymoses or bruises
pustule a small elevation of the skin filled with pus; a small abscess
sebaceous cyst a cyst filled with a chesy material consisting of sebum and epithelial debris that has formed in the duct of a sebaceous gland; also known as epidermoid
sebacceous gland an oil gland located in the dermis; its secerations provide oil to the hair and surrounding skin
seborrha excessive seceration of sebum, reulting in excessive oiliness or dry scales
skin tags a small brownish or flesh-colored outgrowth of skin occuring frequently on the neck; also known as a cutaneous papilloma
sebum the oily secerations of the sebaceous glands
squamous epithelial cells flat scalelike cells arranged in layer(strata)
keratolytic an agent used to break down or loosen the horny(hardend) layer of the skin
laceration a tear in the skin
lanugo soft, very fine hair that covers the body of the developing fetus; this hairy coating is almost completely gone by birth
lesion any visble damage to the tissues of the skin, such as a wound, sore, rash, or boil
lipocyte a fat cell
lumla the crescent-shaped pale area at the base of the fingernail or toenail
macrophage a large phagocytic cell(cell that ingest microorganisms, other cells, and foregin particles)occuring in the walls of blood vesseks and loose connective tissue
macule a small, flat discolration of the skin that is neither rasied or depressed
mast cell a cell(found within the connective tissue)that contains herparin and histamine
melanin a black or dark pigment(produced by melanocytes within the epidermis)that contributes color to the skin and helps to filter ultraviolet light
melanocytes cells responsible for producing melanin
Created by: Courtneey