Chapter 4: integumentary system Flashcards
skin
organ covering the body; made up of layers (also called cutaneous membrane)
epidermis
outer layer of skin, protects the body from external environment
keratin
scleroprotein component of the horny, or cornified, layer of the epidermis. also the primary component of the hair and nails
melanin
dark pigmented by melanocytes; amount present determines skin color
hair
compressed; keratinized cells that arise from hair follicles, the sacs that enclose the hair fibers
nails
horny plates made from flattened epithelial cell; found on the dorsal surface of the ends of fingers and toes
sebaceous glands
secrete sebum (oil) into the hair follicles where the hair shafts pass through the dermis
sudoriferous glands
tiny, coiled, tubular structures that emerge through pores on the skin’s surface and secrete sweat (aka sweat glands)
dermis
inner layer of skin; responsible for its flexibility and mechanical strength
hypodermis
layer between the dermis and the underlying tissues and organs; contains adipose tissue, connective tissue, nerves, and blood vessels (also called subcutaneous layer)
cutane/o
skin
derm/o
skin
dermat/o
skin
hidr/o
sweat
kerat/o
horny tissue (keratin), hard
onych/o
nail
seb/o
sebum/ oil
trich/o
hair
ungu/o
nail
aden/o
gland
crypt/o
hidden
erythr/o
red
leuk/o
white
myc/o
fungus