dermatitis
skin inflammations that increase in frequency with age
delayed-action gene
cause of graying hair
milia
small white bumps on the skin of newborn babies, resulting from accumulations of
sebaceous material
cold intolerance
reflects the loss of insulating subcutaneous tissue w/ age
acne
common consequence of accelerated sebaceous gland activity during adolescence
vernix caseosa
oily substance produced by the fetus's sebaceous glands
lanugo
hairy cloak of the fetus
basal cell carcinoma
cells of the lowest level of the epidermis invade the dermis and hypodermis; exposed
areas develop ulcer; slow to metastasize
squamous cell carcinoma
epithelial cells, not in contact w/ the basement membrane, develop lesions, may
metastasize
malignant melanoma
rare but deadly cancer of pigment producing cells, metastasize like bish
first degree burn
epidermis damage, redness, and some pain (usually brief) ex: sunburn
second degree burn
blisters form, epidermal and some dermal damage; pain regeneration is possible
third degree burn
full thickness burn; epidermal and dermal layers destroyed; skin is blanched;
regeneration is possible, requires grafting; pain is absent cuz nerve endings in the area
are destroyed
arrector pili
tiny muscles attached to hair follicles that pull the hair upright during fright or cold
cutaneous receptors
specialized nerve endings that respond to temperature and touch
hair
found everywhere on body except for palms of hands, soles of feet, and lips; consists
primary of dead keratinized cells
sweat gland (apocrine)
milky in appearance secretion containing proteins and other substances that favor
bacterial growth; become more active at puberty
sebaceous glands (eccrine)
most common type of perspiration gland