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(2) Neuroscience Laboratory > S3_L3: Cranial Nerves > Flashcards

S3_L3: Cranial Nerves Flashcards

1
Q

TRUE OR FALSE: Vagus nerve is the longest cranial nerve. Trigeminal nerve is the longest intracranial nerve.

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

C. Only the 1st statement is true

NOTE: Trochlear nerve is the longest intracranial nerve

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2
Q

The (1)_______ nerve, also known as the (2)_______ nerve, is the smallest cranial nerve.

A
  1. Trochlear
  2. Stupid
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3
Q

The following statements are true about the cranial nerves, EXCEPT:

A. The Trigeminal Nerve has both sensory and motor component.
B. The Vagus Nerve has both sensory and motor component.
C. The Glossopharyngeal Nerve has both sensory and motor component.
D. The Vestibulocochlear Nerve has both sensory and motor component.
E. None of the above

A

D. The Vestibulocochlear Nerve has both sensory and motor component.

NOTE: The Vestibulocochlear Nerve is purely sensory.

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4
Q

Match the following cranial nerve to its corresponding number.

  1. Glossopharyngeal Nerve
  2. Maxillary Division of Trigeminal Nerve
  3. Oculomotor Nerve

A. CN V2
B. CN V3
C. CN IX
D. CN VII
E. CN III

A
  1. C
  2. A
  3. E
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5
Q

Match the following cranial nerve to its corresponding number.

  1. Olfactory Nerve
  2. Trochlear Nerve
  3. Vestibulocochlear Nerve

A. CN IV
B. CN I
C. CN II
D. CN VIII
E. CN X

A
  1. B
  2. A
  3. D
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6
Q

TRUE OR FALSE: The facial nerve has both a sensory and motor component.

A

True

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7
Q

CN V1 corresponds to (1)_______, while CN XI corresponds to (2)_______.

A
  1. Trigeminal Nerve -Ophthalmic Division
  2. (Spinal) Accessory Nerve
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8
Q

CN VI corresponds to (1)_______, while CN VII corresponds to (2)_______.

A
  1. Abducens Nerve
  2. Facial Nerve
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9
Q

CN X corresponds to (1)_______, while CN XII corresponds to (2)_______.

A
  1. Vagus Nerve
  2. Hypoglossal Nerve
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10
Q

TRUE OR FALSE: CN II is the Optic Nerve

A

True

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11
Q

Determine whether a nerve is sensory, motor, or both.

  1. Hypoglossal Nerve
  2. Vestibulocochlear Nerve
  3. Olfactory Nerve
  4. Trochlear Nerve
  5. Oculomotor Nerve

A. Sensory
B. Motor
C. Both

A
  1. B
  2. A
  3. A
  4. B
  5. B
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12
Q

Determine whether a nerve is sensory, motor, or both.

  1. Abducens Nerve
  2. Accessory Nerve
  3. Trigeminal Nerve
  4. Optic Nerve
  5. Facial Nerve

A. Sensory
B. Motor
C. Both

A
  1. B
  2. B
  3. C
  4. A
  5. C
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13
Q

The following nerves are matched with their corresponding nuclei, EXCEPT:

A. Accessory Nerve - Nucleus ambiguus
B. Vagus Nerve - Spinal nucleus of trigeminal nerve
C. Facial Nerve - Superior salivatory nucleus
D. Hypoglossal Nerve - Nucleus of solitary tract
E. None of the above

A

D. Hypoglossal Nerve - Nucleus of solitary tract

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14
Q

The following nerves utilizes the nucleus of solitary tract, EXCEPT:

A. Trigeminal Nerve
B. Facial Nerve
C. Vagus Nerve
D. Glossopharyngeal Nerve
E. None of the above

A

A. Trigeminal Nerve

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15
Q

The parasympathetic nuclei of the oculomotor nerve is the _______

A

Edinger-westphal nucleus

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16
Q

These 2 cranial nerves do not have a nuclei. Which are they?

A
  1. Olfactory Nerve
  2. Optic Nerve
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17
Q

TRUE OR FALSE: The superior and inferior salivatory nucleus is the sensory nuclei of the facial nerve. Along with this is the lacrimal nucleus, which is a parasympathetic nuclei.

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

D. Only the 2nd statement is true

NOTE: The inferior salivatory nucleus is the motor nuclei of the glossopharyngeal nerve.

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18
Q

Match the cranial nerve and their exiting foramina.

  1. Internal acoustic meatus
  2. Foramen ovale
  3. Cribriform plate of ethmoid bone

A. Olfactory Nerve
B. Trigeminal Nerve - Maxillary Division
C. Trigeminal Nerve - Mandibular Division
D. Vestibulocochlear Nerve
E. Hypoglossal Nerve

A
  1. D
  2. C
  3. A
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19
Q

Match the cranial nerve and their exiting foramina.

  1. Foramen rotundum
  2. Hypoglossal canal
  3. Internal acoustic meatus, facial canal, stylomastoid foramen

A. Optic Nerve
B. Trigeminal Nerve - Maxillary Division
C. Facial Nerve
D. Vagus Nerve
E. Hypoglossal Nerve

A
  1. B
  2. E
  3. C
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20
Q

There are 4 nerves which exit the superior orbital fissure. Which are they?

A
  1. Oculomotor Nerve
  2. Trochlear Nerve
  3. Trigeminal Nerve - Ophthalmic Division
  4. Abducens Nerve
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21
Q

There are 3 nerves which exit the jugular foramen. Which are they?

A
  1. Glossopharyngeal Nerve
  2. Vagus Nerve
  3. (Spinal) Accessory Nerve
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22
Q

Where does the optic nerve exit?

A

optic canal

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23
Q

Determine in which fossa do the following cranial nerves exit.

  1. CN III
  2. CN V3
  3. CN X
  4. CN VII
  5. CN II

A. Anterior Cranial Fossa
B. Middle Cranial Fossa
C. Posterior Cranial Fossa

A
  1. B
  2. B
  3. C
  4. C
  5. A
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24
Q

Determine in which fossa do the following cranial nerves exit.

  1. CN IV
  2. CN XII
  3. CN VIII
  4. CN V1
  5. CN I

A. Anterior Cranial Fossa
B. Middle Cranial Fossa
C. Posterior Cranial Fossa

A
  1. B
  2. C
  3. C
  4. B
  5. A
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25
Q

Determine which nerve performs the following function.

For movement of the head, balance and hearing

A. Vagus Nerve
B. Accessory Nerve
C. Vestibulocochlear Nerve
D. Hypoglossal Nerve
E. Trochlear Nerve

A

C. Vestibulocochlear Nerve

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26
Q

Determine which nerve performs the following function.

innervates muscles of soft palate (except tensor veli palatini), pharynx (except stylopharyngeus), and larynx (except cricothyroid)

A. Vagus Nerve
B. Accessory Nerve
C. Vestibulocochlear Nerve
D. Hypoglossal Nerve
E. Trochlear Nerve

A

B. Accessory Nerve

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27
Q

Determine which nerve performs the following function.

Muscles of tongue controlling its shape and movements

A. Vagus Nerve
B. Accessory Nerve
C. Vestibulocochlear Nerve
D. Hypoglossal Nerve
E. Trochlear Nerve

A

D. Hypoglossal Nerve

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28
Q

Determine which nerve performs the following function.

gives the sensation that you are hungry and full

A. Vagus Nerve
B. Accessory Nerve
C. Vestibulocochlear Nerve
D. Hypoglossal Nerve
E. Trochlear Nerve

A

A. Vagus Nerve

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29
Q

Determine which nerve performs the following function.

Assists in turning eyeball downward and laterally

A. Vagus Nerve
B. Accessory Nerve
C. Vestibulocochlear Nerve
D. Hypoglossal Nerve
E. Trochlear Nerve

A

E. Trochlear Nerve

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30
Q

Determine which nerve performs the following function.

Taste from anterior two-thirds of tongue

A. Facial Nerve
B. Glossopharyngeal Nerve
C. Abducens Nerve
D. Trigeminal Nerve
E. None

A

A. Facial Nerve

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31
Q

Determine which nerve performs the following function.

Supplies lateral rectus muscle

A. Facial Nerve
B. Glossopharyngeal Nerve
C. Abducens Nerve
D. Trigeminal Nerve
E. None

A

C. Abducens Nerve

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32
Q

Determine which nerve performs the following function.

innervates stylopharyngeus and pharyngeal constrictors

A. Facial Nerve
B. Glossopharyngeal Nerve
C. Abducens Nerve
D. Trigeminal Nerve
E. None

A

B. Glossopharyngeal Nerve

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33
Q

Determine which nerve performs the following function.

taste of posterior ⅓ tongue

A. Facial Nerve
B. Glossopharyngeal Nerve
C. Abducens Nerve
D. Trigeminal Nerve
E. None

A

B. Glossopharyngeal Nerve

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34
Q

Olfactory Nerve is responsible for a person’s (1)______, while the optic nerve is responsible for (2)______.

A
  1. sense of smell
  2. vision
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35
Q

Which cranial nerve constricts the pupil and accommodates the eye?

A

Oculomotor Nerve

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36
Q

Which cranial nerve innervates stapedius for dampening sound vibrations?

A

Facial Nerve

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37
Q

Which cranial nerve innervates trapezius and sternocleidomastoid?

A

(Spinal) Accessory Nerve

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38
Q

Which cranial nerve innervates heart, larynx, trachea, bronchi, lungs, alimentary tract from pharynx to splenic flexure of colon, liver, kidneys, and pancreas, and palatoglossus muscle?

A

Vagus Nerve

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39
Q

TRUE OR FALSE: CN X helps to fasten digestion.

A

True

40
Q

Oculomotor Nerve raises (1)_____ and turns the eyeball (2)_____, (3)_____, and (4)______.

A
  1. upper eyelid
  2. upward
  3. downward
  4. medially
41
Q

Which division/ branch of the Trigeminal Nerve innervates cornea, skin of forehead, scalp, eyelids, and nose?

A

Ophthalmic Division

42
Q

Which division/ branch of the Trigeminal Nerve innervates mucous membrane of mouth and anterior part of tongue?

A

Mandibular Division

43
Q

Which division/ branch of the Trigeminal Nerve innervates the mylohyoid, anterior belly of digastric, tensor veli palatini, and tensor tympani?

A

Mandibular Division

44
Q

Which division/ branch of the Trigeminal Nerve innervates mucous membrane of nose, the maxillary sinus, and palate?

A

Maxillary Division

45
Q

Which division/ branch of the Trigeminal Nerve innervates mucous membrane of paranasal sinuses and nasal cavity?

A

Ophthalmic Division

46
Q

Which division/ branch of the Trigeminal Nerve innervates skin of cheek, skin over mandible and side of head, teeth of lower jaw and TMJ?

A

Mandibular Division

47
Q

Which division/ branch of the Trigeminal Nerve innervates the skin of face over maxilla and teeth of upper jaw?

A

Maxillary Division

48
Q

Which division/ branch of the Trigeminal Nerve innervates the muscles of mastication?

A

Mandibular Division

49
Q

These 2 cranial nerves work together for phonation and swallowing. What are they?

A

Vagus Nerve and Glossopharyngeal Nerve

50
Q

TRUE OR FALSE: The facial nerve innervates anterior digastric muscle and mylohyoid muscles.

A

False

NOTE: It innervates posterior digastric muscle and stylohyoid muscles

51
Q

Affectation of CN VII will result in difficulty in smiling. This is due to the paralysis of which muscles?

A

risorius and zygomaticus major muscle

52
Q

Affectation of CN VII and IX will result in difficulty of what?

A

tasting food

53
Q

Affectation of CN XII will result in what s/sx of the tongue?

A

Tongue deviation upon protrusion

54
Q

Affectation of CN XI will result in what s/sx?

A

Inability to shrug shoulders

55
Q

Affectation of CN VII will result in what s/sx in the eye?

A

Difficulty in closing eyes

56
Q

What eye muscle becomes paralyzed in a CN VII affectation?

A

orbicularis oculi

57
Q

What tongue muscle becomes paralyzed in a CN XII affectation?

A

Genioglossus muscle

58
Q

What muscle becomes weak or paralyzed in a CN XI affectation?

A

trapezius

59
Q

Lesion to spinal part of the accessory nerve leads to _______

A

drooping of the shoulders

60
Q

When a lesion in the oculomotor nerve occurs, in which direction will the eye look at rest?

A

downward and laterally

61
Q

When a lesion in the oculomotor nerve occurs, it will affect all extraocular muscles except the (1)_______ and (2)______ muscle

A
  1. superior oblique
  2. lateral rectus
62
Q

When the Hypoglossal nerve is affected, to which side will the tongue protrude?

A

Affected side/ Ipsilateral side

63
Q

When the oculomotor nerve is affected, what condition will arise?

A

External Strabismus

64
Q

What chart is used to test the optic nerve?

A

Snellen chart

65
Q

TRUE OR FALSE: In testing the far vision of CN II, the Snellen chart must be read 14 inches away.

A

False.

This is for the near vision. To test the far vision, the chart must be 20 feet away.

66
Q

Myopia pertained to being (1)______ , while Presbyopia means (2)______.

A
  1. nearsighted
  2. farsighted
67
Q

This is referred to as the adjustment from near to far vision

A

Accommodation

68
Q

This is referred to as the action of both eyes moving inward as they focus on a close object using near vision

A

Convergence

69
Q

When shining a penlight on one pupil, what is the expected response of the pupil?

A

quickly constrict

70
Q

What nerves are tested in pupillary reactions, eye movement, and eye convergence & accommodation

A

Oculomotor, Trochlear, and Abducens Nerve

71
Q

In testing the integrity of CN I, the patients eyes must be (1)_____, and the odor introduced must be (2)____.

A
  1. closed
  2. common
72
Q

When the eye views a near object, what happens to the pupils?

A

It constricts

73
Q

When the eye views a distant object, what happens to the pupils?

A

It dilates

74
Q

_______ occurs when convergence doesn’t work properly

A

Diplopia (double vision)

75
Q

This is the rounding up of lens shape by relaxation of ligament to increase refractive index to increase power to bend light

A

Suspensory ligament reflex

76
Q

This is part of the accommodation reflex that restrict entry of light rays diverging from a near object.

A

Pupillary constriction

77
Q

This is part of the accommodation reflex wherein the size of eyes is exaggerated to keep the object of interest centered on the fovea where resolution is highest

A

Convergence

78
Q

This is a possible abnormal finding of CN III, IV, or VI wherein when one pupil is larger or one pupil responds more slowly than the other to light

A

“Sluggish response”

79
Q

This is a possible abnormal finding of CN III, IV, or VI wherein there is involuntary shaking of the eye as it moves

A

Nystagmus

80
Q

This is a possible abnormal finding of CN III, IV, or VI wherein there is weakness of levator palpebrae superioris

A

Ptosis

81
Q

What nerve is being tested when testing for the corneal reflex?

A

Trigeminal Nerve

82
Q

To test the afferent integrity of CN VII, apply a (1)______ solution and (2)_____ solution using a cotton swab the on (3)_____ of tongue

A
  1. saline
  2. sugar
  3. anterior ⅔

NOTE: Salty and sweet → taste on anterior ⅔ of tongue

83
Q

A PT places a vibrating tuning fork on top of head and checks if sound heard in one ear, or equally in both. What function is being tested?

A

Cochlear function of CN VIII

84
Q

A PT places a vibrating tuning fork on top of head and checks if sound heard in one ear, or equally in both. What test is being done?

A

Lateralization or Weber test

85
Q

A PT places a vibrating tuning fork on mastoid bone, then close to ear canal. What test is being done?

A

Rinne test

86
Q

TRUE OR FALSE: Sound is heard longer through bone than air.

A

False

87
Q

What reflex is being tested when targeting for CN IX or X?

A

Gag Reflex

88
Q

TRUE OR FALSE: (+) Gag reflex implies the ability to swallow without risk of aspiration. (-) Gag reflex means there is a loss of sensation and/or loss of motor contraction.

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

D. Only the 2nd statement is true

(+) Gag reflex does not imply the ability to swallow without

89
Q

When there is a UMN vagus nerve lesion, to where will the uvula deviate to?

A

ipsilateral side

90
Q

When there is a LMN vagus nerve lesion, to where will the uvula deviate to?

A

contralateral side

91
Q

What are the possible abnormal findings when testing for CN XI?

A
  1. atrophy of SCM
  2. open door winging pattern of scapula (moved laterally)
92
Q

In cases of stroke and the CN XII is affected, in which side will the tongue deviate when protruded?

A

opposite/ contralateral side

NOTE: UMN lesions → points to the opposite side

93
Q

When there is a peripheral hypoglossal nerve lesions, to where will the tongue deviate?

A

same side/ ipsilateral side

NOTE: LMN lesions → points to the side of lesion

94
Q

TRUE OR FALSE: Fibrillations in the tongue area are common in amyotrophic lateral sclerosis

A

True

95
Q

The following nerves has the nucleus ambiguus as its nuclei, EXCEPT:

A. Accessory Nerve
B. Vagus Nerve
C. Glossopharyngeal Nerve
D. Abducens Nerve
E. None of the above

A

D. Abducens Nerve

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