How can we help?

You can also find more resources in our Help Center.

32 terms

PHCY402: Med Terms Quiz #7 (Integumentary System 1)

Spring 2012
STUDY
PLAY
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 (aka the corium)
sebaceous glands
Oil glands in the skin
sebum
Oily substance secreted by the sebaceous glands
subcutaneous tissue
Connective and adipose tissue layer just under the dermis
collagen
Protein substance found in skin and connective tissue
keratin
Hard protein material found in the epidermis, hair, and nails
lesion
An area of pathologically altered tissue (two types: primary and secondary)
macule
A flat, discolored spot on the skin up to 1 cm across (e.g., a freckle); aka macula
papule
A solid mass on the skin up to 0.5 cm in diameter [e.g., a nevus (mole)]
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 deeper into the epidermis
tumor
A solid mass larger than 1-2 cm
wheal
An area of localized skin edema (swelling) (e.g., a hive)
vesicle
Little bladder; an elevated, fluid-filled sack (blister) within or under the epidermis up to 0.5 cm in diameter (e.g., a fever blister)
bulla
A blister larger than 0.5 cm (e.g., a second-degree burn)
pustule
A pus-filled sac (e.g., a pimple)
ulcer
An open sore on the skin or mucous membrane that can bleed and scar and is sometimes accompanied by infection (e.g., decubitus ulcer)
excoriation
A scratch mark (e.g., from a cat scratch)
fissure
A linear crack in the skin
cicatrix
A mark left by the healing of a sore or wound showing the replacement of destroyed tissue by fibrous tissue; scar
keloid
An abnormal overgrowth of scar tissue that is thick and irregular
spider angioma
A vascular lesion most commonly seen on the face, neck, or chest
purpura
Purpuric lesions; lesions as a result of hemorrhages into the skin
petechia
Spot; a reddish-brown, minute hemorrhagic spot on the skin that indicated a bleeding tendency - small purpura
ecchymosis
Bruise; a black and blue mark - large purpura
nevus
A congenital malformation on the skin that can be epidermal or vascular - aka a mole