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Chp. 6/7 Skin

epthieal membrane composed of epthilial tissue underlying the connective tisuue
connective tissue composed of t=different types of connective tissues
Types of epithelial membranes serous, mucous, cutaneous membrane
cutaneous membrane the skin
serous memebrane simple squamous, epithelium on a connective tissues basement membrane partial- line walls of body cavaties visceral- cover organs in body cavaites
pleura serous memebrane, partial and visceral, lines wall of thoracic cavity and lungs
peritoneum serous memebrane, partial and visceral lines wall and cover organs in adominal cavity
pleurisy disease , inflammation of the serous membrane in the chest cavity
peritontius innflmation of serous membrane in the adominal cavity
mucous membrane epithelial, lines surfaces that open to the exterior, produces mucus
connective tissue membranes does not contain epithelial produces synovial fluid in between joints and linning of brusal sacks
stratum germinativum deepest most layer in the epidermis that continually produces cells , called pigment layer pigment cells called meloncytes produce the brown color pigments melanin
strantum corneum outermost layer of keratin filled cells
epidermis color changes pink- increase in blood volume or oxygen cyanoisis- blue, decrease in blood oxygen vitiligo- light patch skin loss of malaocytes freckled- small macules
dermal-epidermal junction area contact between epidermis and dermis called the spot welds supports epidermis, weakning causes blisters
upper area of dermis characterized by parallel rows of peglike dermal papiliea
thick skin has parallel ridges and no hair
thin skin irregular shallow grooves and hair
deep area filled with collagenous and stretchable elastic fibers
striae stretch marks
birthmarks dermis, malformation of blood vessels strawberry hemangioma port whine stain strok bite
lanugo soft hair of fetus
hair follicule hair growth from epithelial tubelike structure
hair papilia hair growth begins here
alopecia hair loss
arrector pili smooth muscle that produces goose bumps
receptors nerve endings make it able for skin to react like an organ
missenier tactile corpuscle receptor dectects light touch
Lamellar pacini corpuscle receptor able to detect pressure
nails produced by epidermal cells, visble part is nail body , root lies in a groove hidden under the cuticle cresent shaped is a lunlua nail bed changes depending on blood flow
abnormalities in nails onocyclosis- sepration from nail body pitting- common in psorasis
two main types if sweat glands sweat/ sudoriferous sebaceous
sweat/ sudoriferous glands eccrine- most numerous, and important, all ober body, produces sweat out the pores, regulate body heat apocrine- in axilla and genitals, thicker sweat produces odor
sebaceous glands produce oil for hair and skin sebum- black heads acne vulgaris- inflammation of sebaceous glands
first line of defense microbes, Uv, chemicals, cuts and tears, bruising, skin grafts
temp regulation sweat, and blood flow close to surface
skin lesion variation is skins normal structure
elevated lesion cast shadow on their edges papule- small plaque- large vesicle- blister crust- scab wheal- firm with light center
flat lesion- don't have a shadow macule - flat discolered regions
depressed lesion - cast shadow within edge ecoration- scratch ulcer- craterlike fissure - deep crack
first degree partial thickness only epidermis
second degree partial thickness deep epidermal and upper dermis
third degree full thickness, epidermis and dermis
impetigo skin infection highly contagious , stapylocco or strepococcoal
tinea fungal ringworm
warts benign caused by papilloma
boils furuncles, in hair follicle, staphlococcoal
scabies parasite infection
decubitus ulcers bed sores when loss of blood flow
hives cause y fluid loss in blood vessel
psoriasis chronic inflammation with scaly plaques
Eczema characterized by papules and crust
skin cancer squamous, basal, and melanoma
squamous most common hard rasied tumor
Basal papules with central crater rarely spreads
melanoma mole, most serious types
Created by: BB2424