QuestionSBA
QuestionChoice
This is a key step in auditory perception, as it allows the transduction of the mechanical vibration of sound waves into chemical signals, which can be transmitted to the auditory areas of the brain.
10004586
a
The mechanical movement of hair cells on the basilar membrane triggers membrane potential changes, which are transmitted by the vestibulocochlear nerve
QuestionChoice
Vibrations transmitted by oval window travel via the endolymph of the scala vestibuli to the apex, then across the helicotrema, and out through the scala tympani.
10004590
e
Vibrations are transmitted via the endolymph of the scala tympani, through the helicotrema, and then through the scala vestibuli
QuestionChoice
Although this is the correct function of the tensor tympani muscle, it is innervated by the mandibular division of the trigeminal nerve, not the facial nerve.
10004588
c
The tensor tympani muscle, innervated by the facial nerve, acts to dampen sound vibrations from the tympanic membrane
QuestionChoice
The vibration of the stapes transmits vibrations to the perilymph via its footplate, which rests on the oval window, not the round window.
10004587
b
The footplate of the stapes rests on the round window, transmitting vibrations to the endolymph of the inner ear
QuestionChoice
The basilar membrane is narrower and stiffer at its base, but wider at its apex so higher-frequency sounds displace the basilar membrane more at its base.
10004589
d
Higher frequency sounds displace the basilar membrane more at its apex
Concept
Chapter
2693
4306
Auditory pathways
Topic
152
Neuroscience
13464
Which of the following statements best describes an aspect of the auditory perception pathway?
a