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Chapter 4 integumentary system MC
HSC2531 CHANCEY Medical Terminology
Terms in this set (81)
function of integumentary system
Protection from bacteria and other invading organisms, water loss, and damaging effects of UV light. Regulates body temp and synthesizes vitamin D.
Parts of skin
epidermis and dermis
What is the epidermis?
outer layer of skin; protects body from the external environment.
Parts of epidermis
keratin, melanin, hair, sebaceous glands, sudoriferous (sweat) glands.
scleroprotein component of the horny, or cornified, layer of the epidermis. It is also contained in the hair and nails.
dark pigment produced by melanocytes; amount present determines skin color
compressed, keratinized cells that arise from hair follicles, the sacs that enclose the hair fibers
horny plates made from flattened epithelial cells; found on the dorsal surface of the ends of the fingers and toes
secrete sebum (oil) into the hair follicles where the hair shafts pass through the dermis
tiny, coiled, tubular structures that emerge through pores on the skin's surface and secrete sweat
inner layer of skin; responsible for its flexibility and mechanical strength
scraping away of the skin by mechanical process or injury
localized collection of pus
inflammatory disease of the skin involving the sebaceous glands and hair follicles
precancerous skin condition of horny tissue formation that results from excessive exposure to sunlight. It may evolve into a squamous cell carcinoma.
congenital hereditary condition characterized by partial or total lack of pigment (melanin) in the skin, hair, and eyes.
basal cell carcinoma (BCC)
malignant epithelial tumor arising from the bottom layer of the epidermis called the basal layer; it seldom metastasizes, but invades local tissue and often recurs in the same location
infection of the skin, mouth (also called thrush), or vagina caused by the yeast-type fungus Candida Albicans. Candida is normally present in the mucous membranes; overgrowth causes an infection. Esophageal candidiasis is often seen in patients with AIDS.
infection of skin and subcutaneous tissue composed of cluster of boils (furuncles) caused by staphylococcus bacteria.
inflammation of the skin and subcutaneous tissue caused by infection; characterized by redness, pain, heat, and swelling.
injury with no break in the skin, characterized by pain, swelling, and discoloration (bruise)
noninfectious, inflammatory skin disease characterized by redness, blisters, scabs, and itching
slit or cracklike sore in the skin
painful skin nodule caused by staphylococcal bacteria in a hair follicle
death of tissue caused by loss of blood supply followed by bacterial invasion (a form of necrosis)
inflammatory skin disease caused by herpes virus characterized by small blisters in clusters
superficial skin infection characterized by pustules and caused by either staphylococci or streptococci
invasion of pathogens in body tissue
cancerous condition starting as purple or brown papules on the lower extremities that spreads through the skin to the lymph nodes and internal organs; frequently seen with AIDS
torn, ragged-edge wound
any visible change in tissue resulting from injury or disease. Includes sores, wounds, ulcers, and tumors.
invasion of body tissue by methicillin-resistant staphylococcus aureus
invasion into the skin and hair by lice
chronic skin condition producing red lesions covered with silvery scales.
chronic disorder of the skin that produces erythema, papules, pustules, and abnormal dilation of tiny blood vessels, usually occurring on the central area of the face in people older than 30 years
a skin infection caused by an infestation of itch mites. characterized by papule eruptions that are caused by the female burrowing into the outer layer of the skin and laying eggs. Accompanied by severe itching.
disease characterized by chronic hardening (induration) of the connective tissue of the skin and other body organs
squamous cell carcinoma
malignant growth developing from the scalelike epithelial tissue of the surface layer of the epidermis; it invades local tissue and may metastasize. Most frequent cause is chronic exposure to sunlight
systemic lupus erythematosus (SLE)
chronic inflammatory disease involving the skin, joints, kidneys, and nervous system. Autoimmune disease characterized by periods of remission and exacerbations. May also affect other organs.
fungal infection of the skin. Ringworm, athletes foot.
itchy skin eruption composed of wheals of varying sizes and shapes. Also called hives. Caused by infections, allergic reactions to food, medicine, other agents, internal disease, physical stimuli, and genetic disorders.
white patches on the skin caused by the destruction of melanocytes associated with autoimmune disorders
destruction of tissue with a hot or cold instrument, electric current, or caustic substance. Cautery
destruction of tissue by using extreme cold, often by using liquid nitrogen
removal of contaminated or dead tissue and foreign matter from an open wound
procedure to remove skin scars with abrasive material, such as sandpaper
removal by cutting
surgical cut or wound produced by a sharp instrument
incision and drainage (I&D)
surgical cut made to allow the free flow or withdrawal of fluids from a lesion, wound, or cavity
procedure using an instrument that emits a high-powered beam of light used to cut, burn, vaporize, or destroy tissue
technique of microscopically controlled serial excisions of a skin cancer
to stitch edges of a wound surgically
loss of hair
bacteria (s. bacterium)
single-celled microorganisms that reproduce by cell division and may cause infection by invading body tissue
closed sac containing fluid or semisolid material
herpes-type virus that usually causes disease when the immune system is compromised
escape of blood into the skin (or mucous membrane) causing a small, flat, purple, or blue discoloration, as may occur when blood is withdrawn by a needle and syringe from an arm vein
puffy swelling of tissue from the accumulation of fluid
fungus (pl. fungi)
organism that feeds by absorbing organic molecules from its surroundings and may cause infection by invading body tissue; single-celled fungi (yeast) reproduce by budding; multicelled fungi (mold) reproduce by spore formation
abnormal hard spot(s) or area of skin; may include underlying tissue
condition characterized by a yellow tinge to the skin (also called xanthoderma), mucous membranes, and sclera (whites of the eyes) caused by the presence of bile (also called icterus)
overgrowth of scar tissue
condition characterized by white spots or patches on mucous membrane, which may be precancerous
flat, colored spot on the skin
nevus (pl. nevi)
circumscribed malformation of the skin, usually brown, black, or flesh colored. A congenital nevus is present at birth and is referred to as a birthmark (also called a mole)
small, knotlike mass that can be felt by touch
small, solid skin elevation
petechia (pl. petechiae)
pinpoint skin hemorrhage
damage of the skin and the subcutaneous tissue caused by prolonged pressure
small hemorrhages in the skin (or mucous membrane), giving a purple-red discoloration; associated with blood disorders or vascular abnormalities
elevation of skin containing pus
erosion of the skin or mucous membrane
circumscribed cutaneous elevation caused by a virus
small elevation of the epidermis containing liquid (blister)
minute microorganism, much smaller than a bacterium, characterized by a lack of independent metabolism and the ability to replicate only within living host cells; may cause infection by invading body tissue
transitory, itchy elevation of the skin with a white center and a red surrounding area
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