Nerves Sample Questions Flashcards

(98 cards)

1
Q

Which part of the nervous system includes the brain and spinal cord?
A. Peripheral
B. Central
C. Autonomic
D. Somatic

A

B. Central

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2
Q

How many pairs of cranial nerves are there?
A. 10
B. 12
C. 14
D. 31

A

B. 12

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3
Q

The trigeminal nerve exits the skull via:
A. Jugular foramen
B. Hypoglossal canal
C. Multiple foramina depending on division
D. Stylomastoid foramen

A

C. Multiple foramina depending on division

V1 exits via superior orbital fissure, V2 via foramen rotundum, V3 via foramen ovale.

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4
Q

What type of nerve fiber carries impulses to the brain?
A. Efferent
B. Sympathetic
C. Afferent
D. Motor

A

C. Afferent

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5
Q

Which cranial nerve provides motor innervation to the muscles of facial expression?
A. Trigeminal
B. Glossopharyngeal
C. Vagus
D. Facial

A

D. Facial

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6
Q

The vagus nerve is only motor in function. T or F

A

False; It is both motor and sensory.

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7
Q

The lingual nerve provides taste to the anterior 2/3 of the tongue. T or F

A

False; It provides general sensation; taste comes from chorda tympani.

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8
Q

Cranial nerve XII is the hypoglossal nerve. T or F

A

True

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9
Q

The sympathetic nervous system is also called the vegetative system. T or F

A

False; That’s the parasympathetic system

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10
Q

Match the cranial nerve with its function or feature:

A. CN V
B. CN VII
C. CN IX
D. CN X
E. CN XII

___ Innervates muscles of facial expression

___ General sensory to posterior 1/3 tongue

___ Motor to muscles of mastication

___ Taste to anterior 2/3 of tongue

___ Motor to most tongue muscles

___ Parasympathetic to heart and smooth muscle

___ Exits skull via foramen ovale

___ Contains chorda tympani branch

___ Supplies soft palate and pharyngeal constrictors

___ Exits through hypoglossal canal

A
  1. B
  2. C
  3. A
  4. B
  5. E
  6. D
  7. A
  8. B
  9. C
  10. E
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11
Q

Which foramen does V2 exit through?

A

foramen rotundum

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12
Q

Which nerve passes through the parotid gland but does not innervate it?

A

facial nerve (VII)

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13
Q

What nerve innervates the anterior belly of the digastric muscle?

A

mylohyoid nerve (branch V3)

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14
Q

Which cranial nerve provides parasympathetic innervation to the submandibular gland?

A

Facial nerve via chorda tympani

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15
Q

Which branch of V2 innervates the maxillary molars?

A

Posterior superior alveolar nerve

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16
Q

The infraorbital nerve is a continuation of which trigeminal division?

A

V2 (maxillary nerve)

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17
Q

Which foramen does the mandibular nerve (V3) exit?

A

Foramen ovale

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18
Q

The glossopharyngeal nerve provides taste and sensory to which part of the tongue?

A

Posterior 1/3

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19
Q

Which nerve supplies the buccal gingiva of mandibular molars?

A

Long buccal nerve (branch of V3)

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20
Q

The mental nerve exits through which foramen?

A

Mental foramen

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21
Q

Which cranial nerves are most important for dental anatomy?

A

CN V, VII, IX, X, XII

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22
Q

Which cranial nerve is also called the trigeminal nerve?

A

CN V

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23
Q

Which nerve provides sensory to the anterior 2/3 of the tongue?

A

Lingual nerve (branch of CN V3)

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24
Q

Which nerve provides taste to the anterior 2/3 of the tongue?

A

Chorda tympani (branch of CN VII)

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25
Which nerve provides taste and sensory to the posterior 1/3 of the tongue?
Glossopharyngeal nerve (CN IX)
26
Which cranial nerve exits through the jugular foramen and innervates pharyngeal muscles?
Vagus nerve (CN X)
27
Which cranial nerve passes through the parotid gland?
Facial nerve (CN VII)
28
Which cranial nerve is responsible for parasympathetic innervation to the heart?
Vagus nerve (CN X)
29
What number is the facial nerve?
CN VII
30
What number is the glossopharyngeal nerve?
CN IX
31
What number is the vagus nerve?
CN X
32
What number is the hypoglossal nerve?
CN XII
33
What number is the trigeminal nerve?
CN V
34
What is the function of the trigeminal nerve?
Sensory to face and oral structures; motor to muscles of mastication
35
What are the three branches of the trigeminal nerve?
Ophthalmic (V1), Maxillary (V2), Mandibular (V3)
36
Through which foramen does the ophthalmic nerve exit?
Superior orbital fissure
37
Through which foramen does the maxillary nerve exit?
Foramen rotundum
38
Through which foramen does the mandibular nerve exit?
Foramen ovale
39
Which trigeminal division is both sensory and motor?
Mandibular (V3)
40
Which division innervates the upper teeth and maxillary sinus?
Maxillary (V2)
41
Which nerve exits the skull through the supraorbital foramen?
Supraorbital nerve (branch of V1)
42
Which branch of V2 innervates the maxillary molars?
Posterior superior alveolar nerve
43
Which branch of V2 innervates the premolars and MB root of the 1st molar
Middle superior alveolar nerve
44
Which branch of V2 innervates the anterior maxillary teeth?
Anterior superior alveolar nerve
45
Which foramen does the infraorbital nerve exit through?
Infraorbital foramen
46
Which nerve supplies the skin of the nose and lower eyelid?
Infraorbital nerve (branch of V2)
47
Which V3 branch supplies the mandibular teeth?
Inferior alveolar nerve
48
Which V3 branch provides sensory to the anterior 2/3 of the tongue?
Lingual nerve
49
Which branch of V3 supplies the cheek mucosa and buccal gingiva?
Long buccal nerve
50
Which V3 branch innervates the mylohyoid muscle?
Nerve to mylohyoid (branch of inferior alveolar nerve)
51
Which V3 branch exits the mental foramen?
Mental nerve
52
What nerve provides sensation to the lower lip and chin?
Mental nerve
53
What is the name of the branch that picks up the chorda tympani?
Lingual nerve
54
Which foramen does the facial nerve exit through?
Stylomastoid foramen
55
What gland does the facial nerve pass through without innervating?
Parotid gland
56
Which muscle does the posterior belly of the digastric receive innervation from
Facial nerve
57
What branch of CN VII provides taste to the anterior 2/3 of the tongue?
Chorda tympani
58
Which cranial nerve exits the skull via the jugular foramen and innervates the pharynx?
Glossopharyngeal nerve (CN IX)
59
Which nerve provides both taste and general sensory to the posterior 1/3 of the tongue?
Glossopharyngeal nerve (CN IX)
60
Which cranial nerve provides parasympathetic fibers to smooth muscle of the thoracic and abdominal organs?
Vagus nerve (CN X)
61
Which nerve innervates laryngeal and pharyngeal muscles?
Vagus nerve (CN X)
62
What is the function of the hypoglossal nerve?
Motor to most intrinsic and extrinsic tongue muscles
63
Which nerve supplies the submandibular and sublingual glands?
Facial nerve via chorda tympani
64
Which nerve innervates the soft palate and pharyngeal constrictors?
Glossopharyngeal nerve (CN IX)
65
Which cranial nerve is known for its extensive parasympathetic outflow to thoracic and abdominal organs?
Vagus nerve (CN X)
66
What is the primary sensory nerve to the external ear canal?
Vagus nerve (auricular branch)
67
What tongue muscle is not innervated by the hypoglossal nerve?
Palatoglossus (innervated by vagus nerve)
68
What cranial nerve innervates stylopharyngeus muscle?
Glossopharyngeal nerve (CN IX)
69
The carotid sinus receives innervation from which cranial nerve?
Glossopharyngeal nerve (CN IX)
70
Which nerve provides sensory input from the epiglottis?
Vagus nerve (CN X)
71
What cranial nerve provides motor input to the palatoglossus muscle?
Vagus nerve (CN X)
72
The internal branch of the superior laryngeal nerve is a branch of which cranial nerve?
Vagus nerve (CN X)
73
Which nerve is purely motor and innervates all intrinsic tongue muscles?
Hypoglossal nerve (CN XII)
74
Which cranial nerve enters the tongue from beneath (inferior surface)?
Hypoglossal nerve (CN XII)
75
Which cranial nerve exits the skull through the anterior condylar canal?
Hypoglossal nerve (CN XII)
76
Which nerve provides taste to the root of the tongue and epiglottis?
Vagus nerve (CN X)
77
Which nerve innervates the levator veli palatini muscle?
Vagus nerve (CN X)
78
Which nerve provides general sensory innervation to the anterior 2/3 of the tongue?
Lingual nerve (branch of CN V3)
79
Which nerve provides taste sensation to the anterior 2/3 of the tongue?
Chorda tympani (branch of CN VII)
80
Which nerve provides both taste and sensory to the posterior 1/3 of the tongue?
Glossopharyngeal nerve (CN IX)
81
Which nerve provides sensory and taste to the root of the tongue and epiglottis?
Vagus nerve (CN X)
82
What nerve is involved in the gag reflex along with the vagus nerve?
Glossopharyngeal nerve (CN IX)
83
Which nerve must be anesthetized for procedures involving the maxillary molars?
Posterior superior alveolar nerve
84
Which nerve must be anesthetized for mandibular anterior teeth procedures?
Incisive branch of the inferior alveolar nerve
85
Which nerve supplies the mucosa of the hard palate?
Greater palatine nerve
86
Which nerve supplies the soft palate and palatine tonsils?
Lesser palatine nerve
87
A patient experiences loss of taste in the anterior 2/3 of the tongue—what nerve is likely damaged?
Chorda tympani (CN VII)
88
If a patient loses sensation in the chin and lower lip, which nerve is likely involved?
Mental nerve
89
Damage to which nerve can cause deviation of the tongue to one side when protruded?
Hypoglossal nerve (CN XII)
90
Which nerve provides sensory input to the skin over the mandible's angle
Great auricular nerve (from cervical plexus)
91
Which nerve innervates the skin above the eye and forehead?
Supraorbital nerve (branch of V1)
92
Which nerve is responsible for stimulating the parotid gland?
Glossopharyngeal nerve (via otic ganglion)
93
A lesion in CN VII before the chorda tympani branches would affect which functions?
Facial expression and anterior tongue taste
94
A lesion in CN V3 might impair which muscle group?
Muscles of mastication
95
Loss of sensation in the upper lip and cheek suggests damage to which nerve?
Infraorbital nerve
96
What nerve carries parasympathetic fibers to the lacrimal gland?
Facial nerve (via greater petrosal nerve)
97
Which nerve provides motor innervation to the tensor tympani muscle?
Mandibular nerve (V3)
98
What cranial nerve provides a motor component to the pharyngeal constrictor muscles?
Vagus nerve (CN X)