integumentary system ch11 Flashcards
skin includes what?
glands horns beaks hair fur wool claws scales hooves nails
function
largest organ, covers surfaces, protects, lubricates, receptor,temperature, coloration, vitaminD synthesis
epidermis
several thick layers, outermost cellular membranes, no blood vessels, thickness varies
pigmentation
color, melanin, melanocytes
albinism
absence of normal pigmentation
dermis
corium, dense fibrous connective tissue blood and lymph, nerve fivers, accessory organs
collagen
structural protein, found in skin
subcutaneous
hypodermis, thick fat containing tissue
arrector pili
hair stands on end, hackles are up
sweat glands
hydrosis, moisten and cool
pelt
hair and skin of skinned animal
fur
short very fine soft hair that protects in cool temperatures
hails and hooves
hard keratin plates covering distal phalanx, ungulates
cilia
thin tiny hairs lining of respiratory tract
primary hairs
long straight hairs that form outer coat, top coat, over coat