test 2 study guide
Anatomy 232 with Vierya at University of South Carolina - All Campuses
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largest organ in the body
skin
skin
cutaneous
purpose of skin
protection from the environment, excrete salt, makes Vitamin D from calcium absorption from sunlight
outer layer of skin; stratified squamous layer
epidermis
middle layer of skin; dense irregular and areola tissue
dermis
bottom (3rd) layer of skin; adipose tissue
hypodermis
cells in stratum basale and location
keratinocytes, melanocytes, merkel cell. epidermis
newest and youngest cells is inside the cells. strong
keratinocytes
make melanin (dark pigment that protects you from UV radiation)
melanocytes
used for touch
merkel cell
stratum spinosum cells and location?
langerhans cell; next layer up above stratum basal in epidermis. lots of mitosis
immune cells; stops bacteria
langerhans cell
stratum granulosum location
above stratum spinosum in epidermis. keratinocytes start to die and continue being pushed up
stratum lucidum location?
optional layer (arm pits). in places of thick skin. extra layer of dead cells
stratum corneim location?
top layer of epidermis. dead keratinocytes exist.
papillary layer location?
top layer of dermis
all arial tissue and has blood capillaries and meisner's corpuscles
papillary layer
smallest blood vessels that provide oxygen and nutrients for keratinocytes
blood capillaries
touch cell in papillary layer
meisner's corpuscles
bottom layer in dermis
reticular layer
made of dense irregular connective tissue, hair is growing out and alot of glands exist.
reticular layer
membrane shiv found growing at bottom of hair
hair follicle
the hair itself
shaft
makes hair stand up
arrector pilli muscle
produce oily substance called sebum (acne comes from this)
sebaceous gland
bulge at end of hair
hair papilla
blood vessels to hair papilla (hair will fall out if this doesnt exist
hair bulb
main purpose of hair
to keep in heat and protect from UV rays
purpose of eyebrows and lashes
protect eyes from dirt and bacteria
true clear sweat gland
meracrine gland
sweat gland that produces milky sweat and promotes bacterial growth (doesnt start till puberty)
appocrine gland
ear wax
ceruminous
milk in breast
mammary gland
skin layer full of fat
hypodermis
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