The superior olivary nucleus
A. generates the endocochlear potential.
B. receives impulses from the vestibular nerve.
C. helps localize high-pitched tones near the apex of the basilar membrane.
D. sends efferent impulses that inhibit all hair cells not vibrating maximally.
E. stimulates additional hair cells.
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Question 2) Arrange the following parts of the neuronal pathway for hearing in the correct sequence. (1) inferior colliculus (2) medial geniculate nucleus (3) superior olivary nucleus (4) auditory cortex (5) cochlear nucleus
A. 4, 5, 3, 1, 2
B. 5, 3, 1, 2, 4
C. 1, 2, 3, 5, 4
D. 5, 2, 1, 3, 4
E. 5, 4, 1, 3, 2
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Question 3) More sound volume is perceived when
A. sound wave amplitude increases.
B. action potentials from hair cells are blocked.
C. sound wave amplitude decreases.
D. sound wave frequency decreases.
E. sound wave frequency increases.
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Question 4) The utricle and saccule are involved in
A. static balance.
B. kinetic balance.
C. hearing low intensity sounds.
D. hearing high intensity sounds.
E. evaluating movements of the head.
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Question 5) Auditory impulses are transmitted by the _____ portion of the vestibulocochlear nerve.
A. spiral
B. cochlear
C. vestibular
D. ossicular
E. tympanic
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Question 6) The attenuation reflex
A. amplifies loud noises.
B. enhances low frequency sounds.
C. prevents damage to delicate ear structures.
D. involves the scala vestibuli and the scala tympani.
E. vibrates the tympanic membrane.
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Question 7) Cochlear neurons are stimulated by
A. vibrating the oval window.
B. vibrations of the tectorial membrane.
C. bending microvilli or stereocilia on the hair cells.
D. movement of the otoliths in the endolymph.
E. turning the spiral organ.
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Question 8) Arrange the following structures in the order in which they would vibrate as a result of the tympanic membrane vibrating.
(1) oval window
(2) vestibular membrane and endolymph
(3) ossicles
(4) basilar membrane
(5) perilymph
A. 3, 5, 2, 4, 1
B. 1, 2, 5, 3, 4
C. 1, 2, 3, 4, 5
D. 3, 1, 5, 2, 4
E. 3, 2, 4, 5, 1
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Question 9) Arrange the following list of membranes in correct sequence. (1) tectorial membrane (2) vestibular membrane (3) tympanic membrane (4) basilar membrane
A. 1, 2, 3, 4
B. 3, 4, 1, 2
C. 3, 2, 4, 1
D. 2, 4, 3, 1
E. 4, 3, 2, 1
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Question 10) The round window
A. reflects sound waves.
B. vibrates the basilar membrane.
C. allows for compression of the organ of Corti.
D. acts as a mechanical release for waves within the cochlea.
E. increases the pressure of the perilymph.
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