integumentary system Flashcards
what is the integumentary system
hair, skin, nails, glands
function of integumentary system
Protective covering
Regulates body temperature
Prevents water loss
Houses sensory receptors
Forms necessary biochemicals
Excretes some waste
2 layers of skin
outer layer (epidermis)
inner layer (dermis)
nails
Protective coverings on fingers and toes.
Nail plate: keratinized cells over the nail bed
Nail bed: specialized epithelial cells
Lunula: whitish half moon that covers the most actively growing region
2 types of sweat glands
eccrine and apocrine
acne
disease of the sebaceous glands that produce blackheads and pimples
alopecia
hair loss, usually sudden
athletes foot
fungal infection usually in the skin of the toes or soles (can be anywhere on your body)
birthmark
congenital blemish on the skin usually visible right after birth
boil
bacterial infection of the skin caused by bacteria in the hair follicle
cyst
liquid-filled sac or capsule
dermatitis
inflammation of skin
eczema
non contagious skin rash that produces itching, blistering, and scaling
erythema
reddening of the skin due to dilation of dermal blood vessels in response to injury or inflammation
keloid
elevated, enlarging fibrous scar usually initiated by an injury