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18 terms

19- the inner and organ of corti ear structures

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vestibule
big ball that comes off of cochlea and semicircular canals come off of this; helps with equilibrium
semicircular canals
come off the vestibule; equilibrium
cochlea
snail-like structure; contains sensory receptors for hearing
internal auditory meatus
canal where ear goes into skull cavity; carries nerves from inside the skull towards the middle and inner ear
utricle
within the vestibule; balancing, detects motion and orientation
saccule
within the vestibule, bed of sensory cells situated in inner ear; has sensory cells that translate head movements into neural impulses
semicircular ducts
inside of the semicircular canals; sensory input for experiences of rotary movements
cochlear ducts
slender, houses the spiral organ of corti the receptor of hearing
round window
located just below the oval window; equalize pressure in the inner ear
cochlear nerve
branch of the auditory nerve responsible for transmitting auditory info from the cochlea to the brain
scala vestibuli
area at top of cross-section model; leads from oval window to apex of cochlea
scala tympani
area at bottom of cross-section model; extends from apex of cochlea to round window
vestibular membrane
superior to the tectorial membrane; separates the cochlear duct from the scala vestibuli
tectorial membrane
A membrane located above the basilar membrane; serves as a shelf against which the cilia of the auditory hair cells move
basilar membrane
a membrane in the cochlea that supports the Organ of Corti
stria vascularis
pink membrane on cross-section model; produces endolymph and it secretes it
endolymph
the bodily fluid that fills the membranous labyrinth of the inner ear
perilymph
found in scala vestibuli and scala tympani (outside)