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Flashcards in Cranial Nerves Deck (60)
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1

What is the name for CNI

Olfactory n.

2

Which CN gives the sense of smell?

Olfactory n.

3

How does one test CNI?

Wave non-irritating smell under the nose.

4

What is the name for CNII?

Optic n.

5

Which CN gives the sense of sight?

Optic n.

6

How does CN II work?

Transmits retinal images back to the occipital lobe.

7

How does one test CN II?

Snellen chart and fundoscopic examination.

8

What is the name for CN III?

Oculomotor n.

9

Which CN innervates the muscles that control the movement of the eye?

Oculomotor n.

10

Which CN innervates the muscles that control the eyelids?

Oculomotor n.

11

Which CN controls the muscles for pupillary constriction

Oculomotor n.

12

How does one test CN III?

At the same time as testing for CN IV and VI: observe the movement of the eye as patient follows a moving object. Shine a light into the eye to test pupillary constriction.

13

What is the name for CN IV?

Trochlear n.

14

Which nerve innervates the superior oblique muscle of the eye?

Trochlear n.

15

How does one test CN IV?

Observe the ailment of the eye. Patient follows a moving object with the eye.

16

What is the name for CN VI?

Abducens n.

17

Which nerve innervates the lateral rectus muscle of the eye?

Abducens n.

18

How does one test CN VI?

Observe the ailment of the eye. Patient follows a moving object with the eye.

19

What is the name for CN V?

Trigeminal n.

20

What nerve provides sensory innervation to most of the face?

Trigeminal n.

21

What nerve provides motor innervation to the muscles of mastication?

Trigeminal n.

22

What nerve controls corneal reflex?

Trigeminal n.

23

How does one test CN V?

Lightly touching the face and cornea with cotton swab. Observe bite strength.

24

What is the name for CN VII?

Facial n.

25

What nerve provides motor innervation for the muscles of facial expression?

Facial n.

26

What nerve provides parasympathetic motor innervation to the lacrimal gland and sinuses?

Facial n.

27

What are the 2 branches of the facial n.?

Nerve to the stapedius muscle, which innervates the stapedius muscle of the inner ear.
Chorda tympani, which provides special sense innervation from the anterior 2/3 of the tongue.

28

How does one test CN VII?

Ask the patient to make various facial expressions. For taste, dip cotton swab in flavored substance and place on the anterior 2/3 of the tongue.

29

What nerve activates the efferent response of the cornea?

Facial n.

30

What is the name for CN VIII?

Vestibulocochlear n.

31

What are the 2 major divisions of the vestibulocochlear nerve?

Vestibular n., which determines head position/acceleration information from the inner ear.
Cochlear n., which processes the sensation of sound information from the inner ear.

32

How does one test CN VIII?

Tuning fork (Weber and Rinne tests). For the vestibular system: head movements introduced and eyes observed for nystagmus.

33

What is the name for CN IX?

Glossopharyngeal n.

34

What CN provides sensory innervation for the carotid bodies/sinus?

Glossopharyngeal n.

35

What CN provides sensory innervation for the posterior 1/3 of tongue?

Glossopharyngeal n.

36

What CN provides sensory innervation for the pharynx and middle ear?

Glossopharyngeal n.

37

What CN provides motor innervation to the stylopharyngeus muscle and the parotid gland?

Glossopharyngeal n.

38

How does one test CN IX?

Assess taste on the posterior 1/3 of tongue. Determine if sensation is intact on arches of the palate.

39

What is the name for CN X?

Vagus n.

40

What CN provides parasympathetic innervation to all the organs below the neck?

The vagus n.

41

What CN provides motor innervation for the muscles of speech?

Vagus n.

42

How does one test CN X?

Open and say "ahh" and observe the uvula. Observe for normal speech.

43

What is the name for CN XI?

Accessory (spinal) n.

44

Which nerve provides motor innervation to the sternocleidomastoid and trapezius?

Accessory n.

45

How does one test CN XI?

Ask the patient to contract muscles against resistance.

46

What is the name for CN XII?

Hypoglossal n.

47

What CN provides motor innervation to the muscles of the tongue except the palatoglossus m.?

Hypoglossal n.

48

How does one test CN XII?

Ask patient to stick out their tongue. Deviation of the tongue indicates dysfunction.

49

What does "the tongue licks the wound" refer to?

If there is a problem with the hypoglossal nerve and the tongue deviates to one side, the problem is on the same side.

50

Which nerve passes through the cribiform plate?

Olfactory n.

51

Which nerve passes through the optic canal?

Optic n.

52

Which nerves pass through the superior orbital fissure?

Oculomotor n., trochlear n., the opthalmic branch of the trigeminal n. and the abducens.

53

Which nerve passes through the foramen rotundum?

Maxillary branch of the trigeminal n.

54

Which nerve passes through the foramen ovale?

Mandibular branch of the trigeminal n.

55

Which nerves pass through the internal acoustic meatus?

Facial n. and vestibulocochlear n.

56

Which nerves pass through the jugular foramen?

Glossopharyngeal, vagus, and accessory n.

57

Which nerve passes through the hypoglossal canal?

Hypoglossal n.

58

What is the pneumonic for the cranial nerves?

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59

What is the pneumonic for which nerves provide motor, sensory, or both?

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60

What is the pneumonic to remember where the cranial nerves pass through?

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