Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PNS #2 > CN VIII > Flashcards

CN VIII Flashcards

1
Q

What CN is the vestibulocochlear Nerve?

A

CN VIII

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What kind of nerve is the vestibulocochlear nerve?

A

Sensory only

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How many nerves make up the vestibulocochlear nerve?

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What two nerves make up the vestibulocochlear nerve?

A

Vestibular nerve

Cochlear nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does the vestibulocochlear nerve deal with?

A

Hearing and equilibrium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Where does the vestibular never terminate?

A

Vestibular nuclear complex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the four parts making up the vestibular nuclear complex?

A

Superior
Medial
Lateral
Inferior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is another name for the superior part of the vestibular nuclear complex?

A

Bechterew

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is another name for the medial part of the vestibular nuclear complex?

A

Schwalbe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is another name for the lateral part of the vestibular nuclear complex?

A

Deiter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What cell bodies are found in the lateral (Deiter) part of the vestibular nuclear complex?

A

Cell bodies of the vestibulospinal fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Where do fibers carried in the vestibular nerve arise from?

A

Cell bodies in the vestibular ganglion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the parts of the vestibular ganglion?

A

Superior and inferior parts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How many cochlear nuclei are there?

A

Anterior and posterior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Where does the cochlear nerve terminate?

A

In the two cochlear nuclei

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Where are the cochlear nerve fibers cell bodies?

A

In the spiral ganglion of cochlea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the cochlear nerve made of?

A

Bipolar neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Where do the cochlear dendrites travel?

A

From spiral ganglia to spiral organ (organ of corti)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the spiral organ of Corti?

A

Receptor for hearing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

How do the cochlear neurons travel?

A

Axons from the organ of corti carried in the cochlear nerve to the two vestibular nuclei

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Where are the cochlear nuclei found?

A

Posterior, superior medulla oblongata, lateral to the vestibular nuclei

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

How do the cochlear axons travel from the cochlear nuclei to the trapezoid nuclei?

A

Axons cross to other side of brain stem synapse, form the lateral lemniscus

23
Q

How does the lateral lemniscus travel?

A

Ascending info

24
Q

Where do dendrites from the vestibular ganglion extend to?

A

Saccule
Utricle
Semicircular canals

25
Q

Where do axons from the vestibular ganglion send info to?

A

Vestibular nuclei in MO

26
Q

Where is the vestibular nuclei found?

A

In the medulla oblongata on the floor of the rhomboid fossa

27
Q

Where do most vestibular nerve fibers synapse?

A

Medial (schwalbe) vestibular nucleus

28
Q

Where will some of the vestibular nerve fibers terminate?

A

Directly to cerebellum via inferior cerebellar peduncle

Floccunodularlobe

29
Q

How does the info from the vestibulocochlear nerve travel?

A

Distal to proximal

30
Q

What is the apparent origin of the vestibulocochlear nerve?

A

Cerebellarpontine angle

31
Q

How does the vestibulocochlear nerve travel?

A

In posterior cranial fossa to the internal acoustic meatus

32
Q

What other nerve does the vestibulocochlear nerve enter the internal acoustic meatus with?

A

Facial nerve

33
Q

What bone does the vestibulocochlear nerve travel in?

A

Temporal bone

34
Q

Who many fibers does the cochlear nerve carry? **

A

30,000-40,000

35
Q

How does the cochlear nerve travel in the temporal bone?

A

Transverses the internal acoustic meatus inferior to the facial nerve
Leaves and reaches the spiral ganglion of cochlea

36
Q

How many fibers does the vestibular nerve carry?

A

20,000

37
Q

What does the vestibular nerve divide into?

A

Superior and inferior branches as it approaches the ear

38
Q

Which branch of the vestibular nerve is smaller?

A

Inferior branch

39
Q

How many fibers does the inferior vestibular never carry?

A

8,000

40
Q

What nerves make up the inferior branch of the vestibular nerve?

A

Saccular nerve

Posterior ampullary nerve

41
Q

What does the saccular nerve supply?

A

The saccule

42
Q

What does the posterior ampullary nerve supply?

A

The posterior ampullary crest

43
Q

How many fibers make up the superior vestibular branch?

A

12,000

44
Q

What nerves make up the superior vestibular branch?

A

Lateral ampullary nerve

Anterior ampullary nerve

45
Q

What do the lateral and anterior ampullary nerves supply?

A

Lateral and anterior semicircular canals

46
Q

What is the utricle supplied by?

A

A branch from the lateral ampullary nerve and a branch off of the superior vestibular branch

47
Q

What is Voit’s nerve?

A

Branch directly off the superior vestibular branch supplying the saccule

48
Q

What is the saccule supplied by?

A

Voit’s nerve

49
Q

What is an acoustic neuroma?

A

Tumor (vestibular schwanoma)
Can be sizable
Only affects one side
Hearing and equilibrium problems

50
Q

What is tinnitus?

A

Ringing ears

51
Q

What are cochlear implants?

A

Helps with sensorineural hearing loss

Hot topic in deaf community

52
Q

What is vestibular disease?

A

Results in vertigo (spinning feeling)

53
Q

How is vestibular disease different than cervicogenic vertigo?

A

Cervicogenic vertigo you can produce by placing the patient on a spinning chair and slightly moving it

54
Q

What is the name of CN VIII?

A

Vestibulocochlear nerve

PNS #2 (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions