Block 2 Integument Flashcards
What tissues are included in the integumentary system?
skin, hair, nails, sweat glands, sebaceous glands
What are the 4 functions of the integumentary system?
protect from injury, protect for microbes, regulate temp, house sensory receptors
What are the 4 signs of melanoma?
A: asymmetry; B: border irregularity; C: color; D: diameter > 6mm
adip/o
fat
lip/o
fat
steat/o
fat
hidr/o
sweat
hist/o
tissue
histi/o
tissue
kerat/o
hard
melan/o
black
myc/o
fungus
plas/o
formation
scler/o
hard
squam/o
scale
trich/o
hair
xanth/o
yellow
xer/o
dry
trichorrhexis
a broken or split hair
cell in basal layer that gives color to skin
melanocyte
layers of the skin?
CLGSB: corneum, lucidum, granulosum, spinosum, basal
an area of pathologically altered tissue
lesion
what are the 2 types of lesions?
primary & secondary
a flat, discolored area on skin larger than 1 cm
patch
an elevated, palpable solid mass on skin up to 0.5cm in diameter
papule
an elevated palpable solid mass greater than 1 cm in diameter and limited to skin surface
plaque
lesions arising from previously normal skin
primary lesion
a flat, discolored spot on skin up to 1cm across
macule or macula
an elevated, palpable solid mass greater than 1cm that extends deeper into the epidermis
nodule
an elevated, palpable solid mass larger than 1-2 cm
tumor
a lesion that resuls from changes in primary lesions
secondary lesion
a loss of superficial epidermis leaving an area of moisture but no bleeding (e.g. after vesicle rupture)
erosion
an open sore on skin or mucous membrane that can bleed or scar
ulcer
a scratch mark
excoriation
a linear crack in the skin
fissure
a thin flake of exfoliated epidermis
scale
a dried residue of serum, pus, or blood on the skin (like in impetigo)
crust
lesions of a blood vessel
vascular lesion
a small, round, bright red blood vessel tumor on the skin, often on the trunk of the elderly
cherry angioma
a tiny, red blood vessel lesion formed by the dilation of a group of blood vessels radiating from a central arteriole, most commonly on the face, neck, or chest
telangiectasia or spider angioma
purpura; lesions resulting from hemorrhages into the skin
purpuric lesions
spot; reddish-brown, minute hemorrhagic spots on the skin that indicate a bleeding tendency; a small purpura
petechia
bruise; a blakc and blue mark; a large purpura
ecchymosis
a mark left by the healing of a sore or wound, showing the replacement of destroyed tissue by fibrous tissue
cicatrix of the skin
a scar
cicatrix
an abnormal overgrowth of scar tissue that is thick and irregular
keloid
skin tumors arising from the epidermis
epidermal tumors
a congenital malformation on the skin that can be epidermal or vascular, aka a mole
nevus
a mole with precancerous changes
dysplastic nevus
an epidermal tumor caused by a papilloma virus; also called a wart
verruca
baldness; a natural or unnatural deficiency of hair
alopecia
a plug of sebum (oil) within the opening of a hair follicle
comedo
a comedo below the skin surface with a white center (whitehead)
closed comedo
a comedo open to the skin surface with a black center (caused by the presence of melanin exposed to air)–aka a blackhead
open comedo
appearance of a skin lesion
eruption
redness of skin
erythema