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29 Cards in this Set

  • Front
  • Back
epidermis
thin, avascular, superficial region, makes up stratum corneum, no nuclei, offers protection and regulates homeostasis through water or sweat loss, heat evap. and CO2 diffusion
Two layers of epidermis
outer horny layer and inner cellular layer
dermis
middle layer, contains hair follicles and roots, sebaceous glands, apocrine glands (scent ducts), sweat glands
two layers of dermis
CT and sebaceous glands (hair follicles)
subcutaneous tissue
most veins and arteries, has fat, sweat glands, hair follicles
annular
ring shaped
confluent
joining, running together, denoting skin lesions which become merges forming a patch
exanthem
skin eruption occurring as symptom of an acute viral or cocal disease as in scarlet fever or measles
macule
flat lesion with color changes (blue color means color changes deep in dermis)
patch
flat, cirumscribed skin discoloration, very large macule
papule
small, solid raised lesion (<1cm)
plaque
lesion raised slightly from skin surface whose surface area is greater than its height (ex - psoriasis) (>1 cm)
wheal
transient, raised, flat-topped or rounded elevation of skin caused by edema of upper dermis (hives)
nodule
solid, palpable, rounded or ellipsoidal lesion location in epidermis, dermis, or SC (larger papule, >1 cm)
cyst
sac that contains liquid or semisolid substance, usually mobile and soft, epidermis only
vesicle
circumscribed, raised, fluid filled lesion, < .5-1cm (HSV)
bulla
circumscribed, raised, fluid filled lesion, > .5-1cm (big blisters)
pustule
raised lesion of various size and shape that contain PMNs and cellular debris, not hard (follicucitis is hair coming out)
desquamation (scaling)
result of loss of the outermost layer of skin when there is abnormal keratinization and exfoliation of cornified epithelial cells (shedding of epidermis)
crust
result of dried serum, pus, or blood on skin (secondary cause)
atrophy
thinning of epidermis due to decrease in number of cells due to inflammation, trauma, or aging (indentation)
erosion
loss of superficial epidermis, moist but not bleeding
ulcer
deeper loss of skin surface, may bleed and scar
fissure
linear crack in skin
tumor
any localized swelling of tissue
neoplasia
new growth of tissue without normal constraints that usually organize tissues (new and abnormal formation of tissue)
primary skin lesion
initial lesion that has not been altered by trauma, manipulation, or natural regression over time (macule, papules, plaques)
secondary skin lesion
created by scratching, scrubbing, or infection (crusts, scales, ulcers, fissures)
special lesions
purpura, petechiae, comedones, target lesions, burrows, telangiectasias