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ALH Chapter 5

Integumentary System

integument skin
androgen generic term for an agent (usually a hormone)
ductule very small duct
synthesize to form
two layers of the skin epidermis and dermis
epidermis composed of stratum corneum and basal layer
stratum corneum composed of dead cells
stratum corneum lacks blood supply and sensory recpetors
keratin is water proof
melanocytes in the basal layer. Produce melanin
melanin provides a protective barrier from the sun. Black
albinos cannot produce melanin
dermis (corium) second layer of the skin
dermis is composed of living tissue, vessels,nerve endings, hair follicles, oil glans and sweat glands
subcutaneous layer (hypodermis) third layer
subcutaneous layer composed of fat and blood vessels
accessory organs of the skin glands, hair and nails
sudoriferous glands produce sweat. cool body, excrete waste and moisten surface cells
sebaceous glands produce oil.
exocrine glands secrete substances through ducts to an outer surface of the body not into the bloodstream
axillae armpits
sebum oily secretion. destroys harmful organisms, preventing infection
hair shaft visible part of hair
hair root part embedded in the dermis
hair follicle hair root and its coverings
papilla loop of capillaries at the bottom of the follicle
alopecia baldness. occurs when the hairs of the scalp are not replaced because of death of the papillae
nail root composed of keratinized, stratified, squamous epithelial cells
nail bed layer of epithelium
nail body appears pink because of the underlying vascular tissue
lunula region where new growth occurs. white half moon
adipo fat
lipo fat
steato fat
cutaneo skin
dermato skin
dermo skin
hidro sweat
sudoro sweat
ichthyo dry, scaly
kerato horny tissue, hard
melano black
myco fungus
onycho nail
ungu nail
pilo hair
tricho hair
sclero hardening
sebo sebum
squamo scale
xeno foreign, strange
xero dry
-cyte cell
-derma skin
-logist specialist in the study of
-logy study of
-therapy treatment
an without
dia through, across
epi above
homo same
hyper excessive
sub below, under
dermatology medical specialty of skin disorders
lesions areas of tissue that have been pathologically altered by injury, wound or infection
localized area of definite size
systemis widespread
primary skin lesions initial reaction
Created by: Gianna B