Anatomy 7 test

Question Answer
functions of skin keep harmful substances out, keep electrolytes in, protects internal structures and organs, acts as a gland for vitamin D synthesis, regulates body temp
cutaneous membrane another name for skin
layers of skin IN ORDER epidermis, dermis, subcutaneous layer
structure of skin (look at diagram)
avascular no blood supply
epidermis thin outer layer of skin, no blood supply, sweats, has keratin
keratin makes skin harder and strengthens skin
dermis inner layer of skin, formed by fibrous connective tissue, strong and elastic, has touch/oil/pressure/sweat, CONTAINS BLOOD VESSELS
subcutaneous layer Lots of blood (veins and arteries), insulates body from extreme temps outside, anchors skin to body
pathology disease
melanocytes releases melanin/ activated by sun
melanin what makes skin darker, activated by sun
albino zero melanin
vitiligo areas of dark and areas of light
mole area with lots of melanin
melenoma skin cancer
carotene gives a yellow/orange color
cyanosis when skin is blue/ not good circulation
blushing caused by blood vessel dilation
pallor(pale) blood vessel constriction
functions of hair detect insects, protect eyes, dust out of lungs, reduce heat loss,
color of hair affected by amount of melanin
texture of hair affected by shape of shaft
finger nails purpose protect finger tips from injury, has LOTS of keratin, made from skin cells
sebaceous gland secretes sebum into hair follocle
sudorfedrious glands secrete sweat through pores
apocrine gland activated by emotional stress/ becomes more active during puberty/ smells bad/// sweat gland
Eccrine gland hair follicle/ temperature regulation
mammary glands secretes milk
ceruminous glands secretes ear wax
core inside
shell outside
thermoregulation mechanism in which body balances heat
heat production mostly produced by muscles, liver, endocrine glands// affected by physical activity
excrecion urine/ feces
radiation body around colder air
conduction giving off body heat
convection air currents/ (fan, ac)
evaporation sweat / liquid becoming gas
hypothalmus thermostat of the body/ located in the brain
body tempature regulated by.. hypothalamus/ blood vessels/ sweat glands/ skeletal muscles
first degree burn damages epidermis only/ heals/ slight pain
second degree burn deeper/ blister/ heals in week
third degree burn skin doesn't heal/ scarring
eshcar scab over a burn
rules of 9 (review diagram) review diagram
skin care reduce UV radiation/ limit excessive bathing and use of soap/
ABCD rule A=asymmetry // B=boarder// =C= color// d= diameter

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