Anatomy & Physiology Skin

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Integumentary system
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Terms in this set (47)
hair shaftepidermisdermispapillary regionreticular regionepidermiscomposed of keratinocytes (keratin cells) which makes a tough protective layerstratum basalebottom of the epidermis which receives lots of nutrients and carries out mitosisstratum corneumtop layer of epidermis: 25-30 layers of dead cells for protectionmelanocytesproduce melanin, cells found in the stratum basaledermisliving layer of the skin below the epidermis; connective tissue: made of collagen and elastic fibers, has a blood supply, hair follicles are found herepapillary layerupper dermal layer; uneven and peglike, capillaries for nourishment here; pain receptors and Meissner (touch) corpuscles; form fingerprintsreticularlower dermal layer; blood vessels, sudoriferous glands and sebaceous glands, Pacinian (pressure) corpusclessebaceous glandsproduce sebum or oil to keep skin soft, moist, and prevent hair from becoming brittle; contain chemicals to kill bacteriasudoriferous glandseccrine glands and apocrine glands produce sweat in different placesceruminous glandsproduce cerumen (wax) to waterproof and trap debris in the earsubcutaneous (hypodermis)adipose tissue for insulationporefor sweat release from eccrine glandshairkeep debris from eyes, respiratory passages, etchair follicleproduces hairarrector pili muscle"raiser of the hair" causes goose bumpseccrine glandsproduce sweat for thermoregulations; sweat comes out of sweat poreapocrine glandsin axillary and genital areas dump into hair follicles (sweat plus proteins and fatty acidsMeissner corpusclestouchPacinian corpusclespressuresebuman oily substance that lubricates the hair and skinmelanocytes vs. melaninproduce melanin vs. pigment in hair and skin made by melanocytesfirst degree burnmild pain, redness, skin functions normally and only affects the epidermal layer; ex: sunburnsecond degree burnpain, redness, blisters (epidermis separates from underlying layers and fluid fills void), some skin function is lost and affects epidermis and top of the dermis; ex: severe sunburn, you caught on fire and put it out quicklythird degree burnsevere pain, marble white to black color, most skin functions are lost, tissue damage and it affects the entire thickness of the skin; ex: you literally caught on fire and stayed in the fire for a hot minutemalignant melanomaA: asymmetry- MMs lack symmetry B: border- MMs have irregular borders C: color- MMs have uneven coloration and may contain many colors D: diameter- MMs are larger than ordinary molesAthlete's FootAn itchy, red, peeling condition of the skin between the toes; caused from a fungus infection.BoilsInflammation of hair follicles and sebaceous glands; common on the dorsal neck.Carbuncles areComposite boils typically caused by bacterial infection.Cold Soressmall fluid-filled blisters that itch and sting, caused by a herpes simplex infectionContact DermatitisAn inflammation of the skin caused by having contact with certain chemicals or substances; many of these substances are used in cosmetology.Impetigobacterial inflammatory skin disease characterized by vesicles, pustules, and crusted-over lesions, caused by staphylococcus infection.Psoriasisa common skin disorder of unknown cause characterized by flare-ups in which red papules covered with silvery scales occur on the elbows, knees, scalp, back, or buttocks