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The Auditory System
Neuro Quiz
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 Michael McKeough 2008
The Auditory System
Neuro Quiz
Receptor
Physiology
Central
Pathway
100
100
100
100
100
200
200
200
200
200
300
300
300
300
300
400
400
400
400
400
500
500
500
500
500
Misc. I
Misc. II
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Receptor
100
Components of the auditory system
are distributed in these locations.
What are the outer, middle and inner
ear?
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Receptor
200
This is the mechanical stimulus that
changes the discharge frequency from
auditory receptors.
What is the bending of a hair cell?
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Receptor
300
Auditory receptors are located in this
portion of the membranous labyrinth.
What is the cochlea?
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Receptor
400
This organ houses the auditory
receptor.
What is the organ of Corti?
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Receptor
500
The organ of Corti is located in this
cochlear duct.
What is the scala media?
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Physiology
100
The auricle is designed to achieve
this function in the auditory system.
What is collect pressure waves from
the environment?
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Physiology
200
The external auditory meatus is
designed to achieve these functions
in the auditory system.
What are focus and amplify pressure
waves from the environment onto
the tympanic membrane?
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Physiology
300
Pressure waves in the environment
are converted into fluid waves inside
the inner ear by these structures.
Where are the ossicles?
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Physiology
400
Fluid waves inside the cochlea cause
movement of this structure which in
turn causes the bending of hair cells.
What is the basilar membrane?
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Physiology
500
The accuracy of the sound
transmitted from the outer ear to the
inner ear (fidelity) is regulated by this
mechanism.
What is variable stiffness of the
ossicles regulated by tension in the
tensor tympani and stapedius
muscles?
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Central Pathway
100
The cell bodies of first-order neurons
comprise this ganglion.
What is the spiral ganglion?
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Central Pathway
200
Auditory information travels to the
brain via this cranial nerve.
What is the vestibulo-cochlear
nerve (CN VIII) ?
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Central Pathway
300
The central pathway of the auditory
system is organized as this type of
projection system.
What is a bilateral projection
system?
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Central Pathway
400
Auditory information destined for the
cortex projects via this thalamic relay.
What is the medial geniculate nucleus?
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Central Pathway
500
The variable stiffness of the basilar
membrane is the origin of this type of
organization found throughout the
central pathway of the auditory
system.
What is tonotopic organization?
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Miscellaneous I
100
The primary auditory cortex is
located here.
What is the superior temporal gyrus on
the inferior bank of the lateral fissure?
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Miscellaneous I
200
The ossicles consist of these three
bones.
What are the Maleus (hammer), Incus
(anvil) and Stapes (stirrup)?
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Miscellaneous I
300
Pressure waves in the environment
cause movement of the ossicles by
moving this structure.
What is tympanic membrane?
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Miscellaneous I
400
This flexible membrane helps to prevent
the force of propagating fluid waves
from damaging the cochlea.
What is the round window?
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Miscellaneous I
500
This is the means by which sound is
localized.
What is auditory control centers
comparing the arrival time of
information from the two ears?
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Miscellaneous II
100
This structure captures
electromagnetic waves of pressure
propagating in the environment.
What is the auricle?
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Miscellaneous II
200
These flexible membranes form the
boundaries of the middle ear.
What are the tympanic membrane
and oval window?
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Miscellaneous II
300
This is the arrangement of hair cells
in the organ of Corti.
What is inner and outer?
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Miscellaneous II
400
Damage to the structures of the
external or middle ear may result in
this type of deafness.
What is conduction deafness?
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Miscellaneous II
500
Damage to the structures of the inner
ear (organ of Corti or the cochlear
nerve) may result in this type of
deafness.
What is nerve (sensorineural)
deafness?
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