Chapter 5- Integumentary System Flashcards
integument
skin, largest organ in the body
accessory organs
hair, nails, and glands makes up the integumentary system
adrogen
generic term for agent (usually hormone- testosterone or aldosterone) that stimulates development
ductule
very small duct
homeostasis
state of equilibrium of the internal environment of the body despite changes in external environment
synthesize
forming a complex substance by the union of simpler compounds or elements
what the skin does
protects underlying structures from injury and provides sensory information to the brain, protect the body against UV rays, regulating body temperature and preventing dehydration
Epidermis
outer layer of the skin, is relatively thin over most areas but is thickest on palms and soles of feet
Strata
sublayers located in the epidermis
layer below epidermis
stratum corneum
basal layer
deepest layer, composed of living cells where new cells are formed
keratin
protein amterial
melanocytes
special cells located in the basal layer and produce a black pigment known as melanin
albino
individual who cannot produce melanin
dermis
second layer of the skin (aka. corium); composed of living tissue and contains numerous capillaries, lymphatic vessels, and nerve endings
sebaceuous
oil glands
sudoriferous
sweat glands
subcutaneuos layer
aka hypodermis, binds the dermis to underlying structure; composed primarily of loose connective tissue and adipose (fat) tissue interlaced with blood vessels
exocrine glands
two glands are this (sebaceous and sudoriferous)
axillae
armpits
sebum
oil secretion that helps destroy harmful organisms on the skin
hair shaft
part that is embedded in the dermis is the hairoot
hair follicle
root, together with its coverings
papilla
at the bottom of the hair follicle is a coop of capallaries enclosed in a covering