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33 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Types of Rashes and causes
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-Dermatitis
-Urticaria (hives) -environment, stress |
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types of flat lesions
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-macule
-patch |
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types of elevated lesions
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-papule
-plaque -nodule -tumor -wheal |
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types of elevated fluid filled lesions
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-Vesicle
-bulla (blister) -pustule -Cyst Which is considered infected? (hit H key for answer) |
Pustule
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Abscess
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infected lesion
furuncle (boil) -raised area -necrotic & purulent tissue |
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Carbuncle
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multiple interconnected furuncles
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name the different types of secondary lesions (7)
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-scales >>epidermal
-scabs (crust) -abrasions (excoriation) -fissures (linear in shape) -erosions (denuded) -ulcers -Scars |
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why obesity is harder on the heart
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skin accounts for 1/3 of CO
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Types of skin
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mucocutaneous
mucous glabrous hairy |
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What is mucocutaneous skin?
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at the junction of mucous membrane, hairy skin, lips, and tongue
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Where are mucous membranes?
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lining the inside of body orifices
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What is Glabrous skin
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skin s hair
-generally thicker |
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What does connective tissue consist of?
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a matrix (ground substance, protioglycans), fibers, cells (fibroblasts)
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difference of loose connective tissue
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less fibers
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difference b/w regular and irregular connective tissue
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regular is parallel (tendons, ligs)
irregular is not (skin) |
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Skin protects us from
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UV rays
Microbes Mechanical stresses |
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Immune function of skin
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-Physical/chemical barrier
-skin has low pH (acidic) -effected by hand washing diabetes, and CRF -Langerhans (dendritic) cell -antigen preventing cells |
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How does skin maintain homeostasis?
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-hydration status
-thermoregulation -vitamin D levels |
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Thickness of dermis and epidermis
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dermis=2-4mm
epidermis=0.5-0.6mm |
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Appendages
-location and examples |
-derived from epidermis and anchored in the dermis
-hair, nails, glands (sebaceous and sweat) |
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Epidermis
-tissue type -blood supply -turnover -function -make-up |
-epithelial tissue
-Avascular (depends on diffusion) -monthly turnover -is a physical barrier and is key in Vit D synthesis -mostly keratinocytes (water proof strong layer) |
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number of layers in epidermis
-name top and bottom |
4 layers (5 in glabrous skin)
-outer layer= S. Corneum -deep layer= S. Basilar |
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What is a callus and what do you need to do if it is around a wound?
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-excessive S. Corneum
-need to alter mech. stresses |
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Other cell types in epidermis
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-melanocytes
-Merkel cells -Dentritic cells |
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Melanocytes
-fx -location |
-pigmentation and UV protection
-Melanin granules -typically located on outer surface to protect other cells from UV rays |
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Merkel Cells
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-mechanoreceptors
-movement cause release of neurotransmitter |
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Dentritic cells
-location and Fx |
-prominent in S. Spinosum
-function=ABCs??? |
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Dermis
-layers -tissue type -cells -glands |
-papillary and reticular
-dense irregular connective tissue -fibroblasts,macrophages, mast cells -sebaceous and sweat glands |
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what do mast cells secrete?
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histamines
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Sebaceous gland secretion and function
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oil to prevent drying (fissures)
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Sweat gland types, there locations and functions
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-Eccrine (merocrine)
-all skin esp glabrous -thermoregulators -cholinergic innvervation -Apocrine -axilla, scalp ect -adrenergic -possible pheromone fx |
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Subcutaneous layer
-tissue -function -blood supply |
-mostly adipose, also fascia(dense connective)
-energy stores and fat soluble vitamins -blood vessles and lymphatics |
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Types of skin cancer
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-melanoma (4% of cancers but 79% of deaths)
-basal -sqamous |
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