Skin Flashcards
Accessories of the skin
nails, hair, glands
function of skin
barrier, protects from injuries, regulate body temp, sensory functions
most superficial layer of the skin
epidermis
“true skin”
dermis
deep layer of skin
hypodermis
epidermis
layer of dead cells w/ an underlying layer of living cells
dermis
contains blood vessels, sweat glands, and nerves
hypodermis
subcutaneous layer
deepest layer
Stratum Basale
most superficial layer
stratum corneum
completely full of keratin
Stratum corneum
is dividing
stratum spinosum
translucent
lucidum
is only found in thick skin
lucidum
contains cells that are still alive
basale
is up to 30 cell layers thick
corneum
good nutrient supply
basale
contains cells that are beginning to fill w/ keratin
granulosum
finger prints (epidermal ridges)
projections of the stratum basale
sebaceous gland
associated w/ hair follicle
what secretes sebum
sebaceous gland
what produces water and salt
sudoriferous glands
merocrine gland
cools body down, responds to temp (most common)
apocrine gland
strongly influenced by hormones
what is stimulated when frightened, during pain, emotional upset
apocrine gland
Hair: below the skin
root
Hair: above the skin
shaft
center of hair
medulla
outside layers
cortex, cuticle
causes hair to stand on end when contracted
arrector pili muscle
dermal papilla
tissue that projects into the hair bulb + provides nutrition for the growing hair
