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CNHP Ch 2
Term | Definition |
---|---|
Epidermis | Outer layer of skin ~ consists of 3 parts ~ strata |
Stratum Basale | Site of cell production (innermost layer of epidermis) |
Stratum Corneu | Layers of dead cells sloughed off (outermost layer of epidermis) |
Dermis | Middle layer of skin ~ interlocks with epidermis and subcutaneous |
Subcutaneous | Inner layer of skin ~ composed of adipose (fatty) tissue |
adip/o | fat |
lip/o | fat |
steat/o | fat |
corne/o | hard |
horn | hard |
cutane/o | skin |
derm/o | skin |
deramat/o | skin |
erythr/o | red |
hidr/o | sweat |
hist/o | tissue |
histi/o | tissue |
kerat/o | hard |
scler/o | hard |
melano | black |
myc/o | fungus |
onych/o | nail |
plas/o | formation |
purpur/o | purple |
seb/o | oil |
sebum | oil |
squam/o | scale |
trich/o | hair |
xanth/o | yellow |
xer/o | dry |
Primary lesions | flat, nonpalpable changes in skin color ~ elevated, palpable, solid mass ~ elevation formed by fluid within a cavity |
Secondary lesions | lesions that result in changes in primary lesions |
Vascular lesions | lesions of a blood vessel |
Cherry angioma | round, bright red blood vessel tumor; often seen on trunk |
telangiectasia (spider angioma) | radiate from central arteriole; most often found on face, neck, or chest |
Purpuric lesions | lesions as a result of hemorrhages in the skin |
petechia | minute hemorrhagic spot that indicate a bleeding tendency |
ecchymosis | bruise, black and blue mark; a large purpura |
cicatrix | mark left by the healing of a sore or wound, showing the replacement of destroyed issue by fibrous tissue |
keloid | abnormal overgrowth of scar tissue that is thick and irregular |