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Flashcards in Cranial Nerves High Yield Deck (54):
1

Which CN nuclei lie medially?

III, IV, VI, XII

Factors of 12, except 1 and 2

2

Function of the superior coliculi?

Conjugate vertical gaze

3

Function of inferior colliculi?

auditory

4

Which CN nuclei are located in the midbrain?

III, IV

5

Which CN nuclei are located in pons?

V, VI, VII, VIII

6

Which CN nuclei are located in the medulla?

CN IX, X, XII

7

Which CN nuclei is located in the spinal cord?

XI

8

Where does CN I exit through?

cribiform plate

9

Where does CN II exit through?

optic canal

10

Were dies CN V2 exit through?

Foramen Rotundum

11

Where does CN V3 exit through?

Foramen Ovale

12

Where does the middle meningial artery exit through?

Foramen spinosum

13

What exits through the superior orbital fissure?

CN III, IV, V1 VI, ophthalmic vein, sympathetic fibers

14

What exits through internal auditory meatus?

CN VII, VIII

15

What exists through jugular foramen?

CN IX, X, XI, jugular vein

16

What exists through hypoglossal canal?

CN XII

17

Where does CN XI exit through?

Foramen magnum

18

Which eye muscles does CN III control?

SR, IR, MR, IO

Accomidation

Levator palpebrae (eyelid opening)

19

Which muscle does the trochlear nerve control?

SO

20

Which nerve innervates the muscles of mastication?

Trigem

21

What are the 3 divisions of trigem?

Ophthalmic
Maxillary
Mandibular

22

What muscle does the abducens nerve control?

LR

23

Which nerve controls facial movement?

CN VII

24

Which nerve innervates the stapedius muscle in the ear?

CN VII

25

Which nerve controls the orbicularis oculi (eyelid closing)?

CN VII

26

Nerve that innervates swallowing and soft palate elevation and the uvula?

CN X

27

Which nerve innervates the SCM and trapezius?

CN XI

28

Which nerve innervates tongue movement?

CN XII

29

What is the swallowing center?

Nucleus ambguus

30

Nerves involved in nucleus ambiguus?

IX, V, XI

31

WHat is the visceral sensory center for taste, baroreceptors and gut distention?

Nucleus solitarius

32

What nerves are involved in the nucleus solitarius?

VII, IX, X

33

Afferent and efferent branches of the corneal reflex?

Afferent= V1 (nasocilliary branch)

Efferent= VII (Temporal branch)

34

Afferent and Efferent branches of the lacrimal reflex?

Afferent= V1

Efferent= VII

35

Afferent and efferent branches of the jaw jerk?

Afferent= V3 (sensory)

Efferent= V3 (motor- masseter)

36

Afferent and efferent branches of the pupillary reflex?

Afferent= II

Efferent= III

37

Afferent and efferent branches of the gag reflex?

Afferent= IX

Efferent= X

38

Uvula deviates toward or away from the side of the CN X lesion?

Away

39

When an CN XI lesion occurs, is there weakness when turning the head towards or away from the side of the lesion?

turning away (contralateral)

40

When an CN XI lesion occurs, is there shoulder droop of contralateral or ipsilateral side of the lesion?

Ipsilateral side

41

Does tongue deviate towards or away from the side of lesion?

Toward

42

Where is the cavernous sinus located?

On either side of the pituitary

43

Where CN nerves pass through the cavernous sinus?

III, IV, V1, VI

44

How does the outer ear transfer sound?

Vibration of eardrum

45

How does middle ear conduct and amplify sound?

ossicles (malleus, incus and stapes)

46

How does the inner ear transmit sound?

Basilar membrane vibrates secondary to sound waves--> transduction via har cells--> auditory nerve signaling--> brain stem

47

Where are low frequency sounds heard?

Apex

48

Where are high frequency sounds heard?

Base

49

Where are high frequency sounds heard?

Base

50

What type of hearing loss has an abnormal Rinne test (Bone> air)?

Conduction

51

Which type of hearing loss has a weber test that localizes o the unaffected ear?

Sensory neuronal

52

What type of lesion:

"contralateral paralysis of the lower face and the forehead is spared"

UMN lesino

53

What type of lesion:

"ipsilateral paralysis of upper and lower face"

LMN lesion

54

What type of lesion:

"peripheral ipsilateral facial nerve paralysis with inability to close eye on involved side"

Facial nerve Palsy (Bell's Palsy)

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