mot 133
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| stratified squamous keratinizing epitheliumNo capillaries | epidermis
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| innermost epidermis layer | stratum germinativum
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| where mitosis takes place | stratum germinativum
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| are scattered in the stratum germinativum | merker cells
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| receptors to touch | merker cells
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| antimicrobial peptides | defensins
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| epidermis produces vitamin D from what product when exposed to ultraviolet rays | cholesterol
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| outtermost epidermis layer | stratum corneum
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| waterproof layer of keratin | stratum corneum
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| barrier to pathogens and chemicals | stratum corneum
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| separation of epidermis and dermis | blister
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| burn that is painful but no blister | 1st degree burn
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| burn that has blisters and is painful | 2nd degree burn
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| burn that chars the skin no pain | 3rd degree burn
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| is produced when the rate of mitosis in the stratum germinativum increases | callus
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| pathogens in blood | septicemia
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| tissue fluid evaporates from burned surface, plasma is pulled from capillaries into tissue spaces. blood volume and pressure decreases | circulatory shock
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| also called dendric cells and are originated in red bone marrow and located in the epidermis | langerhans cells
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| ingest pathogens present them to lymphocytes | langerhans cells
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| found in stratum corneum and produce melanin | melanocytes
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| protects stratum germinativum from ultra voiolet rays | melanin
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| made of irregular fibrous connective tissuef | dermis
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| fiberblasts produce collagen and elastin | dermis
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| fiberblasts produce two things in the dermis | collagen and elastin
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| strong | collagen
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| strech and recoil | elastin
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| uneven junction of dermis andd epidermis | papillary layer
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| lots of capillaries | papillary layer
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| made of epidermal tissue | hair follicle
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| contain cells called matrix | hair root
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| where mitosis takes place for hair | hair root
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| at base of hair follicle | hair root
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| where malanin colored hair is pushed to the surface | hair shaft
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| functions of hair | keep dust from eyes and nose insulate the head
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| small smooth muscle attached to each hair that draws the hair follicle upright when exsposed to cold or fear | pilmotor muscle
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| found on ends of fingers and toes | nail follicles
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| produce nails | nail follicles
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| where mitosis takes place in nail | nail root
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| part of nail that consists of living dermis and epidermis | flat nail bed
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| protect ends of fingers and toes from mechanical injury | nails
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| most of these for the cutaneous senses are found in the dermis | receptors
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| name the cutaneous senses | touch pressure heat cold and pain
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| there is a specific receptor for each | sentation
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| free nerve endings are receptors for | pain heat and cold
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| encapsulated nerve endings are receptors for | touch andd pressure
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| a cellular structure around the sensory nerve ending | encapsulated nerve ending
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| purpose of these is to provide the CNS with information about the external enviornment and its affects on the skin | receptors and sensations
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| their ducts open into hair follicles or directly to the skin surface | sebaceous glands
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| sebaceous glands secrete | sebum
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| a lipid substance referred to as oil | sebum
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| inhibits growth of bacteria on body and prevents drying of skin and hair | sebum
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| located in the dermis of the ear canals | ceruminous glands
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| ceruminous glands secrete | cerumen
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| ear wax | cerumen
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| type of sweat gland most numerous in axillae and genital areas | apocrine glands
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| sweat gland that is most active in stressful and emotional situations | aprocrine glands
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| type of sweat gland that is found all over the body | eccrine glands
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| the tube of this sweat gland extends to the skins suface and opens into a | pore
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| the sweat produced by these glands is important in the maintenance of normal body temperature | eccrine glands
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| loss of too much body water in sweat can lead to | dehydration
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| four things lost in sweat | saltwatersodium chlorideurea
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| a nitrogenous waste product of amino acid metabolism | urea
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| organ primarily responsible for removing waste products from the blood and for maintaining the body's proper salt to water proportion | kidneys
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| small arteries that are in the dermis the smooth muscle in their walls permis them to constrict or dilate. importance for maintenance of body temperature | arterioles
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| arterioles dilate | vasodilation
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| arterioles constrict | vasoconstriction
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| regulation of the diameter of the arterioles in response to external temp erature changes is controlled by the | nervous system
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| blood flow to the epedermis is interrupted | decubitus ulcer
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| is one of the connective tissue membranes made of areolar connective tissue and adipose tissue | superficial tissue or subcutaneous tissuesuperficial fascia
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| connects the dermis to the unerlying muscles | superficial facia
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| an extremely serious infection that requires surgical removal of the infected tissue | necrotizing fasciitis
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| a function of subcutaneous tissue | medication administration
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Created by:
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