Auditory system B6 Flashcards

1
Q

Moaural (single-ear) localization depends on such cues, and accuracy in localizing sound is impaired by damage to the _____.

A

Pinna

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2
Q

Sounds are transmitted from the tympanic membrane to the inner ear by 3 bony ossicles, what are they?

A

Malleus
Incus
Stapes

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3
Q

Arm of malleus is connected to ___________membrane

A

Tympanic

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4
Q

Organ of corti is found in the _________.

A

Scala media

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5
Q

__________ consists of receptor hair cells, 3 rows of outside air cells and one row of inside hair cells.

A

Organ of corti

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6
Q

SOUnd wave travels from ____ to ____ of basilar membrane.

A

Apex to base

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7
Q

High pitch tones are heard closer to the ______.

A

base

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8
Q

For lower frequency sounds it is more _____.

A

distal

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9
Q

What two nerves make up the vestibulocochlear nerve?

A

Vestibular nerve and Cochlear nerve

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10
Q

The vestibulocochlear nerve traverses in the subarachnoid space to enter the ________________ together with the facial nerve and travels in the auditory canal.

A

Internal auditory meatus

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11
Q

The posterior cochlear nucleus and the anterior cochlear nucleus are located partially on the surface of the brainstem at the _____________ junction.

A

pontomedullary

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12
Q

All fibers in the cochlear nerve (1st order neurons) synapse in the ________ nuclei.

A

cochlear

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13
Q

As cochlear info ascends it is distributed through multiple parallel pathways that ultimately converge in the _______________.

A

Inferior colliculus

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14
Q

True/False: No auditory symptoms are seen with stroke.

A

True

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15
Q

The auditory cortex is located in the ____________ gyri of the temporal love.

A

transverse

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16
Q

Injury to elements of the peripheral apparatus, such as the ear ossicles or the tympanic membrane, result in ______________.

A

Conductive deafness

17
Q

Damage to CN8 may result in _________________.

A

Sensorineural deafness

18
Q

Normal hearing in Rinne test?

A

AC>BC Air conduction is greater than Bone conduction (pt can hear tuning fork next to Pinna)

19
Q

Abnormal hearing in Rinne test?

A

BC>AC Bone conduction is greater than Air conduction (pt not able to hear tuning fork)

20
Q

What test is based on bone conductance only?

A

Webber test, Screens for sensorineural hearing loss.

21
Q

Normal hearing with Webber test?

A

Normal hearing, No lateralization

22
Q

Abnormal hearing with Webber test?

A

Abnormal sensorineural. Lateralization to the opposite ear.