Question 1

Which of the following best describes the function of the rows of outer hair cells in the organ of Corti?

Accepted Answer

A)  Adjust sensitivity of inner hair cells to stimulation
B)  Transduce the auditory signal itself
C)  Determine the direction of sound
D)  Adjust stiffness of basilar membrane through reflex activity

Question 2

In the central auditory pathway, which of the following represents the correct sequence of structures in the pathway?

Accepted Answer

A)  Cochlear nuclei → superior olive → inferior colliculus via lateral lemniscus → medial geniculate → auditory cortex
B)  Cochlear nuclei → inferior olive → inferior colliculus via medial lemniscus → medial geniculate → auditory cortex
C)  Cochlear nuclei → superior olive - superior colliculus via lateral lemniscus → lateral geniculate → auditory cortex
D)  Cochlear nuclei → inferior olive → inferior colliculus via lateral lemniscus → lateral geniculate → auditory cortex A

Question 3

The function of the round window can best be described by which of the following statements?

Accepted Answer

A)  Provides connection point for stapes
B)  Serves to damp out low-frequency sounds such as your own voice
C)  Transmits frequency information into cochlea from tympanic membrane
D)  Serves as pressure relief valve for cochlea

Question 4

Which structure within the central auditory pathway is involved in determining the direction of sound?

Accepted Answer

A)  Trapezoid body
B)  Superior olivary nucleus
C)  Auditory cortex
D)  Inferior colliculus

Question 5

Low-frequency sound causes which portion of the basilar membrane to vibrate to the greatest extent?

Accepted Answer

A)  Near oval window
B)  Middle portion
C)  Along entire length
D)  Near helicotrema

Question 6

The function of the inner hair cells of the organ of Corti is best described as which of the following?

Accepted Answer

A)  Transduces auditory signal
B)  Adjusts sensitivity of outer hair cells
C)  Sends inhibitory signals to lateral geniculate nucleus
D)  Stabilizes basilar membrane

Question 7

In the central auditory system, nerve fibers from the superior olivary nucleus project to which of the following?

Accepted Answer

A)  Medial geniculate nucleus via medial lemniscus
B)  Auditory cortex via superior colliculus
C)  Superior colliculus via trapezoid body
D)  Inferior colliculus via lateral lemniscus

Question 8

The attenuation reflex protects the cochlea from loud, low-frequency sounds by which of the following mechanisms?

Accepted Answer

A)  Contraction of both stapedius and tensor tympani muscles
B)  Contraction of stapedius muscle, relaxation of tensor tympani muscle
C)  Relaxation of both stapedius and tensor tympani muscles
D)  Relaxation of stapedius muscle, contraction of tensor tympani muscle

Question 9

High-frequency sound causes which portion of the basilar membrane to vibrate?

Accepted Answer

A)  Near oval window
B)  Middle portion
C)  Along entire length
D)  Near helicotrema

Question 10

A 20-year-old soldier suffers a noise-induced hearing loss over a period of 6 months as a result of multiple exposures to loud sounds. Use this information to answer the next two questions.
-An increase in which of the following is the most likely cause of this hearing loss?

Accepted Answer

A)  Connexin 26
B)  Endolymph
C)  Perilymph
D)  Reactive oxygen species

Question 11

Which of the following makes a direct connection with the oval window?

Accepted Answer

A)  Tympanic membrane
B)  Stapes
C)  Malleus
D)  Incus B

Question 12

Damage to the inner hair cells of the organ of Corti located from the midpoint of the basilar membrane to the helicotrema will most likely result in a loss of the ability to accomplish which of the following?

Accepted Answer

A)  Perceive high-frequency sounds
B)  Taste all but the bitter taste sensation
C)  Appreciate floral scent
D)  Perceive low-frequency sounds

Question 13

The bending of hair cell stereocilia mediates auditory signals through which of the following mechanisms?

Accepted Answer

A)  Both depolarization and hyperpolarization
B)  Depolarization only
C)  Hyperpolarization only

Question 14

A 20-year-old soldier suffers a noise-induced hearing loss over a period of 6 months as a result of multiple exposures to loud sounds. Use this information to answer the next two questions.
-Loss of which of the following structures is most likely to contribute to the hearing deficit?

Accepted Answer

A)  Cochlea
B)  Inner hair cells
C)  Organ of Corti
D)  Scala media
E)  Scala vestibuli

Question 15

Which of the following makes a direct connection with the round window?

Accepted Answer

A)  Incus
B)  Stapes
C)  Malleus
D)  None of the above

Question 16

How many rows of outer hair cells are present in the human organ of Corti?

Accepted Answer

A)  One
B)  Two
C)  Three
D)  Four

Question 17

Which of the following best describes the receptor organ that generates nerve impulses required for hearing?

Accepted Answer

A)  Basilar membrane
B)  Organ of Corti
C)  Scala tympani
D)  Stapes B

Exam 53: The Sense of Hearing

Which of the following best describes the function of the rows of outer hair cells in the organ of Corti?

Correct Answer
verified

In the central auditory pathway, which of the following represents the correct sequence of structures in the pathway?

Correct Answer
verified
A

The function of the round window can best be described by which of the following statements?

Correct Answer
verified

Which structure within the central auditory pathway is involved in determining the direction of sound?

Correct Answer
verified

Low-frequency sound causes which portion of the basilar membrane to vibrate to the greatest extent?

Correct Answer
verified

The function of the inner hair cells of the organ of Corti is best described as which of the following?

Correct Answer
verified

In the central auditory system, nerve fibers from the superior olivary nucleus project to which of the following?

Correct Answer
verified

The attenuation reflex protects the cochlea from loud, low-frequency sounds by which of the following mechanisms?

Correct Answer
verified

High-frequency sound causes which portion of the basilar membrane to vibrate?

Correct Answer
verified

A 20-year-old soldier suffers a noise-induced hearing loss over a period of 6 months as a result of multiple exposures to loud sounds. Use this information to answer the next two questions. -An increase in which of the following is the most likely cause of this hearing loss?

Correct Answer
verified

Which of the following makes a direct connection with the oval window?

Correct Answer
verified
B

Damage to the inner hair cells of the organ of Corti located from the midpoint of the basilar membrane to the helicotrema will most likely result in a loss of the ability to accomplish which of the following?

Correct Answer
verified

The bending of hair cell stereocilia mediates auditory signals through which of the following mechanisms?

Correct Answer
verified

A 20-year-old soldier suffers a noise-induced hearing loss over a period of 6 months as a result of multiple exposures to loud sounds. Use this information to answer the next two questions. -Loss of which of the following structures is most likely to contribute to the hearing deficit?

Correct Answer
verified

Which of the following makes a direct connection with the round window?

Correct Answer
verified

How many rows of outer hair cells are present in the human organ of Corti?

Correct Answer
verified

Which of the following best describes the receptor organ that generates nerve impulses required for hearing?

Correct Answer
verified
B

Exam 53: The Sense of Hearing

Which of the following best describes the function of the rows of outer hair cells in the organ of Corti?

Correct AnswerverifiedShow Answer

In the central auditory pathway, which of the following represents the correct sequence of structures in the pathway?

Correct AnswerverifiedA

The function of the round window can best be described by which of the following statements?

Correct AnswerverifiedShow Answer

Which structure within the central auditory pathway is involved in determining the direction of sound?

Correct AnswerverifiedShow Answer

Low-frequency sound causes which portion of the basilar membrane to vibrate to the greatest extent?

Correct AnswerverifiedShow Answer

The function of the inner hair cells of the organ of Corti is best described as which of the following?

Correct AnswerverifiedShow Answer

In the central auditory system, nerve fibers from the superior olivary nucleus project to which of the following?

Correct AnswerverifiedShow Answer

The attenuation reflex protects the cochlea from loud, low-frequency sounds by which of the following mechanisms?

Correct AnswerverifiedShow Answer

High-frequency sound causes which portion of the basilar membrane to vibrate?

Correct AnswerverifiedShow Answer

A 20-year-old soldier suffers a noise-induced hearing loss over a period of 6 months as a result of multiple exposures to loud sounds. Use this information to answer the next two questions. -An increase in which of the following is the most likely cause of this hearing loss?

Correct AnswerverifiedShow Answer

Which of the following makes a direct connection with the oval window?

Correct AnswerverifiedB

Damage to the inner hair cells of the organ of Corti located from the midpoint of the basilar membrane to the helicotrema will most likely result in a loss of the ability to accomplish which of the following?

Correct AnswerverifiedShow Answer

The bending of hair cell stereocilia mediates auditory signals through which of the following mechanisms?

Correct AnswerverifiedShow Answer

A 20-year-old soldier suffers a noise-induced hearing loss over a period of 6 months as a result of multiple exposures to loud sounds. Use this information to answer the next two questions. -Loss of which of the following structures is most likely to contribute to the hearing deficit?

Correct AnswerverifiedShow Answer

Which of the following makes a direct connection with the round window?

Correct AnswerverifiedShow Answer

How many rows of outer hair cells are present in the human organ of Corti?

Correct AnswerverifiedShow Answer

Which of the following best describes the receptor organ that generates nerve impulses required for hearing?

Correct AnswerverifiedB

Correct Answer
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Correct Answer
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A

Correct Answer
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B

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B