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40 Cards in this Set
- Front
- Back
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functions of the skin
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regulates body temperature, protection, sensation, excretion, immunity (langerhaus cells in the skin), blood resevoir, synthesis of vitamin D
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layers of the skin
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epidermis-primarily epithelial cells, arranged in five layers, avascular
dermis-elastic and extensible CT where sweat glands, hair follicles, and nails are and containing a network of blood vessels, lympth vessels, and nerve endings hypodermis-subcutanious layer, superficial fascia made of loose areolar CT |
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layers of the epidermis
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stratum corneum-25-30 layers and karetin which is a barrier against heat, light, and bacteria
stratum lucidum-3-5 layers of clear, flat cells on palms and feet and fingers stratum granulosum-3-5 layers of flat cells that develop dark granules called keratomylin stratum spinosm-spiny shaped, 8-10 layers that fit tightly together and have langerhaun cells and keratinocytes stratum basale-living active cells at deepest level containing stem cells and melanocytes |
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functions of the skin
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regulates body temperature, protection, sensation, excretion, immunity (langerhaus cells in the skin), blood resevoir, synthesis of vitamin D
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types of cells
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keratinocytes
melanocytes langerhans merkel cells |
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keratinocytes
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90% of epidermis, produces keratin which protects skin from the environment
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layers of the skin
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epidermis-primarily epithelial cells, arranged in five layers, avascular
dermis-elastic and extensible CT where sweat glands, hair follicles, and nails are and containing a network of blood vessels, lympth vessels, and nerve endings hypodermis-subcutanious layer, superficial fascia made of loose areolar CT |
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melanocytes
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produces melanin which is respoinsible for the color of skin
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layers of the epidermis
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stratum corneum-25-30 layers and karetin which is a barrier against heat, light, and bacteria
stratum lucidum-3-5 layers of clear, flat cells on palms and feet and fingers stratum granulosum-3-5 layers of flat cells that develop dark granules called keratomylin stratum spinosm-spiny shaped, 8-10 layers that fit tightly together and have langerhaun cells and keratinocytes stratum basale-living active cells at deepest level containing stem cells and melanocytes |
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types of cells
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keratinocytes
melanocytes langerhans merkel cells |
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langerhans
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immune cells that are antigin producing cells that destroy abnormal cells
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keratinocytes
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90% of epidermis, produces keratin which protects skin from the environment
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merkel cells
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sensory and tactile cells
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melanocytes
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produces melanin which is respoinsible for the color of skin
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layers of the dermis
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papillary layer- feeds epidermis, has loose areolar CT
reticular layer- deep portion, consists of dense irregular CT w/ interlacing bundles of collogen and elastic fibers |
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langerhans
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immune cells that are antigin producing cells that destroy abnormal cells
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melanin
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pigment that produces freckles, tans, and liver spots (brown or black)
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merkel cells
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sensory and tactile cells
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functions of the skin
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regulates body temperature, protection, sensation, excretion, immunity (langerhaus cells in the skin), blood resevoir, synthesis of vitamin D
|
|
|
layers of the dermis
|
papillary layer- feeds epidermis, has loose areolar CT
reticular layer- deep portion, consists of dense irregular CT w/ interlacing bundles of collogen and elastic fibers |
|
|
layers of the skin
|
epidermis-primarily epithelial cells, arranged in five layers, avascular
dermis-elastic and extensible CT where sweat glands, hair follicles, and nails are and containing a network of blood vessels, lympth vessels, and nerve endings hypodermis-subcutanious layer, superficial fascia made of loose areolar CT |
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melanin
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pigment that produces freckles, tans, and liver spots (brown or black)
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layers of the epidermis
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stratum corneum-25-30 layers and karetin which is a barrier against heat, light, and bacteria
stratum lucidum-3-5 layers of clear, flat cells on palms and feet and fingers stratum granulosum-3-5 layers of flat cells that develop dark granules called keratomylin stratum spinosm-spiny shaped, 8-10 layers that fit tightly together and have langerhaun cells and keratinocytes stratum basale-living active cells at deepest level containing stem cells and melanocytes |
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types of cells
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keratinocytes
melanocytes langerhans merkel cells |
|
|
keratinocytes
|
90% of epidermis, produces keratin which protects skin from the environment
|
|
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melanocytes
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produces melanin which is respoinsible for the color of skin
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langerhans
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immune cells that are antigin producing cells that destroy abnormal cells
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merkel cells
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sensory and tactile cells
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layers of the dermis
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papillary layer- feeds epidermis, has loose areolar CT
reticular layer- deep portion, consists of dense irregular CT w/ interlacing bundles of collogen and elastic fibers |
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melanin
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pigment that produces freckles, tans, and liver spots (brown or black)
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carotene
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pigmen that is a fat or lipid found through out the three layers (orange or yellow)
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hemoglobin
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pigment with protein that carries oxygen in blood cells (pink or red)
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problems that may arise
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cyanotic-lack of oxygen/circulation
jaundice-yellow in whites of eyes erythema-redness of skin diapheretic-excessive sweating/grey skin/go to doctor asap pallid-pale, dont end face down because blood pressure might be low |
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glands
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sebacous-oil
sediferous-sweat ceruminous-earwax mammory-milk |
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contact inhibition
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fibers change direction of movement until the merge together to heal an epidermal wound
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wound healing stages
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inflammatory
migratory proliferative maturation |
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laceration
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wound or irregular tear of the skin
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adhesion
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scare tissue or abnormal joining together of fibrous tissue under the skin
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scar
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mark left on the skin that has less blood supply
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keloid
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a scar that is raised up and shiny
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