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phm 316 ch 5

phm 315 ch 5

adip/o fat
lip/o fat
steat/o fat
derm/o skin
dermat/o skin
cutane/o skin
erythr/o red
hidr/o sweat
hist/o tissue
histi/o tissue
ischthy/o fish
kerat/o hard
scler/o hard
leuk/o white
melan/o black
myc/o fungus
onych/o nail
plas/o formation
purpur/o purple
seb/o sebum (oil)
squam/o scale
trich/o hair
xanth/o yellow
xer/o dry
epithelium cells covering external and internal surfaces of the body
epidermis thin, cellular outer layer of the skin
squamous cell layer flat, scale-like epithelial cells comprising the outermost layers of the epidermis
basal layer deepest region of the epidermis
melanocyte a cell found in the basal layer that gives color to the skin
melanin dark brown to black pigment contained in melanocytes
dermis dense, fibrous connective tissue layer of the skin (also known as the corium)
sebaceous glands oil glands in the skin
sebum oily substance secreted by the sebaceous glands
sudoriferous glands sweat glands
subcutaneous tissue connective and adipose tissue layer under the dermis
collagen protein substance found in skin and connective tissue
hair outgrowth of the skin composed of keratin
keratin hard protein material found in the epidermis
lesion an area of pathologically altered tissue (two types: primary and secondary)
primary lesions lesions arising from previously normal skin
flat, nonpalpapable changes in skin color macule, and patch
macule a flat, discolored spot on the skin up to 1 cm across
patch a flat, discolored area of skin larger than 1 cm
elevated, palpable, solid masses papule, plaque, nodule, tumor, wheal
papule a solid mass on the skin up to 0.5 cm in diameter
plaque a solid mass greater than 1 cm in diameter, limited to the surface of the skin
nodule a solid mass greater than 1 cm which extends deep into the epidermis
tumor a solid mass larger than 1-2 cm
wheal an area of localized skin edema (ex a hive)
elevation formed by fluid within a cavity vesicle, bulla, pustule
vesicle little bladder; an elevated, fluid-filled sac (blister) within or under the epidermis up to 0.5cm in diameter (ex a fever blister)
bulla a blister larger than 0.5 cm (ex a second degree burn)
pustule a pus filled sac (ex a pimple)
secondary lesions lesions that result in changes in primary lesions
loss of skin surface erosion, ulcer, excoriation, fissure
erosion to gnaw away, loss of superficial epidermis leaving an area of moisture but no bleeding. (ex area of moisture after rupture of a vesicle)
ulcer an open sore on the skin or mucous membrane that can bleed and scar and is sometimes accompanied by infection
excoriation a scratch mark
fissure a linear crack in the skin
material on the skin surface scale, crust
scale a thin flake of exfoliated epidermis (ex dandruff)
crust dried residue of serum (body liquid), pus, or blood on the skin (ex in impetigo)
cicatrix of the skin a mark left by the healing of a sore or sound showing the replacement of destroyed tissue by fibrous tissue
keloid an abnormal overgrowth of scar tissue that is thick and irregular
vascular lesions lesions of a blood vessel: cherry angioma, telangiectasia
cherry angioma a small, round, bright-red blood vessel tumor on the skin, often on the trunk of the elderly
telangiectasia a tiny, red blood vessel lesion formed by the dilation of a group of blood vessels radiating from a central arteriole. most commonly seen on the face, neck, or chest. AKA spider angioma
spider angioma a tiny, red blood vessel lesion formed by the dilation of a group of blood vessels radiating from a central arteriole. most commonly seen on the face, neck, or chest. AKA telangiectasia
purpuric lesions purpura; lesions as a result of hemorrhages into the skin. Petechia and ecchymosis
petechia spot; a reddish-brown, minute hemorrhagic spot on the skin that indicate a bleeding tendency - small purpura
ecchymosis bruise; a black and blue mark - large purpura
epidermal tumors skin tumors arising from the epidermis
nevus a congenital malformation on the skin that can be epidermal or vascular - also called a mole
dysplastic nevus a mole with precancerous changes
verruca an epidermal tumor caused by a papilloma virus - also called a wart
Created by: HugsAndKisses