CN VIII Flashcards

0
Q

Where do fibers carried in the vestibular nerve arise from?

A

Vestibular Ganglion

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1
Q

Where does the vestibular nerve terminate?

A

Vestibular nuclear complex

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2
Q

Where is the vestibular ganglion located?

A

internal acoustic meatus

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3
Q

Where does cochlear nerve terminate?

A

Ant. & Post. cochlear nuclei

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4
Q

Cochlear nerve fibers arise from what?

A

spiral ganglion

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5
Q

Where is spiral ganglion?

A

cochlea

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6
Q

Where do cochlear peripheral processes extend to?

A

spiral organ
aka
organ of corti

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7
Q

Where is ant & post cochlear nuclei located?

A

posterior superior medulla oblongata

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8
Q

Axons from cochlear nuclei cross the brainstem and synapse on what?

A

Trapezoid nuclei

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9
Q

Axons from trapezoid nuclei form what?

A

lateral lemniscus

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10
Q

Where do peripheral processes from the vestibular ganglion extend to?

A

sacule, utricle, and semicircular canals

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11
Q

Processes from vestibular ganglion convey info where?

A

vestibular nuclei

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12
Q

Where is the vestibular nuclei located?

A

Medulla oblongata on floor of the rhomboid fossa

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13
Q

Most vestibular nerve fibers terminate in which nucleus?

A

Medial vestibular nucleus
aka
Schwalbe

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14
Q

Some fibers travel to cerebellum by way of what?

A

Inferior cerebellar peduncle

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15
Q

Apparent origin of CN VIII

A

cerebellopontine angle

16
Q

Carried in posterior cranial fossa to internal acoustic meatus. Enters Internal acoustic meatus with which other nerve?

A

facial nerve

17
Q

What are divisions of inferior branch?

A

saccular nerve and posterior ampullary nerve

18
Q

What is superior branch formed by?

A

lateral and anterior ampullary nerves

19
Q

utricle supplied by what?

A

lateral ampullary nerve

branch directly off superior

20
Q

Saccule innervated by?

A

Superior branch (Volts nerve)