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AP skin Flashcards

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13334233855dermal papillaeform the papillary layer interlocking grooves with the epidermis causes finger prints0
13334247118blood vesselsNourish epidermis & dermis Contains sensory receptors & glands Cells of the immune system1
13334266520HypodermisNOT a layer of skin Tissue: adipose & alveolar (variable thickness) LOC: deep to dermis FUNC: insulation, cushioning & energy storage2
13334286862sebaceous glandsoil glands in the skin3
13334295898oil glands (sebaceous glands)clusters of epithelial cells association with hair follicle LOC: everywhere except palms/soles FUNC: water proofing, inhibit bacteria acne: increased sebum = infection4
13334328830Sweat (sudoriferous) glandsproduce sweat, widely distributed in skin to cool temp5
13334334175eccrine sweat glandspresent throughout life open to skin surface responds to heat present everywhere6
13334342980apocrine sweat glandsACTIVE AT PUBERTY Secretion contains lipids & proteins, acted on by bacteria, causing body Oder associated with hair follicles activated by heat or strong emotion7
13334366204Haireverywhere except palms and soles8
13334370096hair follicleEpithelial tube into dermis growth by mitosis at hair bulb, kerinocytes die as they are pushed to the surface9
13334385682arrector pili muscleSmooth muscle contraction (causes goose bumps) Raisies hair shaft to rap warm air10
13334399357hair colorProduced by melanocytes at the hair papilla11
13334414088temperature regulationnegative feedback Control center: HYPOTHALAMUS12
13334427252Normal temperature98.6 F or 37 C13
13334434812Increase temperatureDialation of dermal blood vessels -> warm blood carried to surface14
13334457968Constriction of blood vesselswarm blood diverted to dermis15
13334492808drop in temperatureConstriction of dermal blood veesels -> less heat loss from surface16
13334510898shiveringresponse to cold; body shakes to turn into body heat17
13334521250feverhypothalamus changes set point18
13334530836hypo/hyperthermiahypo: cold hyper: hot Inability to maintain body temp (elders and kids affected most)19
13334543058Skin healing (epidermis)Heals with new cells produced by stratum basal20
13334548012skin healing (dermis)Heals with scar tissue produced by fibroblasts21
13334552824scar tissueThe thick, collagenous tissue that forms at an injury site NONFUNCTIONABLE22
133345629731st degree burnOnly the epidermis (red, painful, and edema) heals with no scaring23
133345717102nd degree burnepidermis and part of dermis (blistered) heals without scaring unless infected24
133345793983rd degree burnAll three layers have been effected skin may slough off heals very slowly with scaring skin grafts usually required25
13334603734wrinklesdecreased flexibility and thickness of dermis loss of fat, collagen fibers and elastic fibers26
13334614907diminished temperature regulationfewer sweat glands fewer dermal blood vessels27

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