Lab 7 - Start Prac 2 - Auditory & Visual Systems Flashcards
parts of middle ear
ossicles, tympanic membrane
parts of outer ear
pinna, external auditory meatus
inner ear contains blank
cochlea, vestibular system
3 ossicles
malleus, incus, stapes
ossicle attached to typmanic membrane
malleus
this ossicle footplate is attached to oval window of inner ear
stapes
malleus is aka
tensor tympani
malleus innervation
trigeminal
stapes innervation
facial nerve
sound waves from the air must enter the blank inner ear
fluid
fluid is blank compressible compared to air
less
most sound hitting fluid is blank
reflected back
part of ear like a transformer that increases pressure in the inner ear fluid
middle ear
area of stapes is blank than tympanic membrane area
less
force at tympanic membrane is blank force at oval window
equal
pressure at the stapes is blank than pressure at tympanic membrane
higher
aka oval window
fenestra vestibuli
aka round window
fenestra cochlea
thin, stiff blank responds best to blank frequency
base, high
wide, flexible blank responds best to blank frequency
apex, low
three fluid spaces of inner ear
scala vestibuli, media, tympani
2 membranes of inner ear
reissners, basilar
hair cells, support cells, and tectorial membrane of inner ear
organ of corti