19- the inner and organ of corti ear structures

18 terms by kmhintz

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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)

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