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pirotte Neuro
auditory system
24
Other
Not Applicable
09/26/2005

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Cards

Term
where does the stapes attach?
Definition
oval window
Term
what innervates the tensor tympani?
Definition
V
Term
what innervates the stappedius?
Definition
VII
Term
what is the core of the bony labyrith called?
Definition
modiolus
Term
what window is assoc with the scala vestibuli?
Definition
oval
Term
what window is assoc with the scala tympani?
Definition
round
Term
where is the organ of Corti?
Definition
in the scala media (cochlear duct)
Term
what fills the membranous labyrinth?
Definition
endolymph
Term
between scala vestibuli and the cochlear duct?
Definition
vestibular membrane
Term
between scala tympani and the cochlear duct?
Definition
basilar membrane
Term
perilymph high in...
Definition
NaCl
Term
endolymph high in...
Definition
K+
Term
where do inhibitory inputs to the hair cells come from?
Definition
olivocochlear nerves
Term
what allows for frequency sensitivity along the organ of corti?
Definition
floppiness of the basilar membrane
Term
what NT do hair cells release?
Definition
Glu
Term
where are hi freq sounds best heard?
Definition
near the oval window
Term
where are low freq sounds best heard?
Definition
near the helicotrema
Term
path of sound APs?
Definition
cochlear n. fibers - d/v cochlear nn. - SON - ll - ic - bic - mg
Term
where does sound localization occur first?
Definition
S.O.N.
Term
which nucleus projects to the c/l S.O.N.?
Definition
dorsal cochlear
Term
what is the case if Rinne's is bestter heard on bone?
Definition
conductive deafness
Term
what is the case if louder on one side?
Definition
conductive deafness on that side or sesorineural deafness on the other side
Term
what decibel loss is considered abnml?
Definition
-20db
Term
what causes sensirneural deafness?
Definition
hair cell damage
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