Cranial Nerves Flashcards

1
Q

What are the two components of the trigeminal nerve (CN V)?

A

Branchial motor

General sensory

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2
Q

What is the function of the branchial motor component of the trigeminal nerve (CN V)?

A
  • Muscles of mastication
  • Tensor tympani
  • Tensor palatini
  • Mylohyoid
  • Anterior belly of digastric
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3
Q

What nerve supplies the muscles of mastication?

A

CN V - trigeminal

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4
Q

What is the function of the general sensory component of the trigeminal nerve (CN V)?

A
  • From face & scalp as far as top of head
  • Conjuctiva
  • Bulb of eye
  • Mucous membrane of paranasal sinuses
  • Nasal and oral cavities (tongue and teeth)
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5
Q

Which one is not part of the opthalamic nerve (CN V1)?

A. Frontal nerve
B. Nasociliary nerve
C. Zygomatic nerve
D. Lacrimal nerve

A

C. Zygomatic nerve

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6
Q

Which one is not part of the maxillary nerve (CN V2)?

A. Buccal nerve
B. Superior alveolar nerves
C. Infra-orbital nerve
D. Zygomatic nerve

A

A. Buccal nerve

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7
Q

Which one is not part of the mandibular nerve (CN V3)?

A. Meningeal branch
B. Auriculotemporal nerve
C. Buccal nerve
D. Lingual nerve
E. Superior alveolar nerves
F. Inferior alveolar nerve
A

E. Superior alveolar nerves

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8
Q

Which one is correct?

A. V1: Frontal nerve, Zygomatic nerve, Lacrimal nerve
B. V2: Zygomatic nerve, Superior alveolar nerves, Buccal nerve
C. V1: Lingual nerve, frontal nerve, nasociliary nerve
D. V3: Lingual nerve, buccal nerve, zygomatic nerve
E. V2: zygomatic nerve, infra-orbital nerve, superior alveolar nerves

A

E. V2: zygomatic nerve, infra-orbital nerve, superior alveolar nerves

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9
Q

What are the components of the facial nerve (CN VII)?

A

Branchial motor
Visceral motor
General sensory
Special sensory

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10
Q

What is the function of the branchial motor component of the facial nerve (CN VII)?

A
  • Supply stapedius
  • Supply stylohyoid
  • Supply posterior belly of digastric muscles
  • Muscles of facial expression
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11
Q

What is the function of the visceral motor component of the facial nerve (CN VII)?

A
  • stimulate salivary glands
  • stimulate mucous membrane of nose
  • stimulate hard and soft palates
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12
Q

What is the function of the general sensory component of the facial nerve (CN VII)?

A
  • supply skin of outer ear
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13
Q

What is the function of the special sensory component of the facial nerve (CN VII)?

A
  • taste anterior 2/3 of tongue
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14
Q

What nerve supplies the anterior 2/3 of the tongue?

A

Facial nerve- CN VII

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15
Q

What nerve supplies the tensor tympani?

A

Trigeminal nerve- CN V

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16
Q

What are the components of the glossopharyngeal nerve (CN IV)?

A
  • Branchial motor
  • Visceral motor
  • Visceral sensory
  • General sensory
  • Special sensory
17
Q

What is the function of the branchial motor component of the glossopharyngeal nerve (CN IV)?

A
  • supply striated muscle (stylopharyngeus)
18
Q

What is the function of the visceral motor component of the glossopharyngeal nerve (CN IV)?

A
  • supply otic ganglion, which sends fibers to stimulate parotid gland
19
Q

What is the function of the visceral sensory glossopharyngeal nerve (CN IV)?

A
  • sensation from carotid body and carotid sinus
20
Q

What is the function of the general sensory component of the glossopharygeal nerve (CN IV)?

A
  • Sensation posterior 1/3 of tongue

- Sensation skin of external ear

21
Q

What is the function of the special sensory component of the glossopharyngeal nerve (CN IV)?

A
  • taste of posterior 1/3 of tongue
22
Q

What nerve supplies taste from posterior 1/3 of tongue?

A

Glossopharyngeal nerve (CN IV)

23
Q

What are the components of the vagus nerve (CN X)?

A
  • branchial motor
  • Visceral motor
  • Visceral sensory
  • General sensory
24
Q

What is the function of the branchial motor component of the vagus nerve (CN X)?

A
  • striated muscle of pharynx, tongue and larynx
25
Q

What is the function of the visceral component of the vagus nerve (CN X)?

A
  • smooth muscle and glands of pharynx and larynx
26
Q

What is the function of the visceral sensory component of the vagus nerve (CN X)?

A
  • From larynx, trachea, esophagus, thoracic and abdominal viscera
  • stretch receptors of aortic arch
27
Q

What is the function of the general sensory component of the vagus nerve (CN X)?

A
  • skin back of ear
28
Q

What is the component of the optic nerve (CN II)?

A
  • Special sensory
29
Q

What is the function of the special sensory component of the optic nerve (CN II)?

A
  • convey visual info from retina
30
Q

What are the components of the oculomotor nerve (CN III)?

A
  • Somatic motor

- Visceral motor

31
Q

What is the function of the somatic motor component of the oculomotor nerve (CN III)?

A
  • supply muscles of eye
32
Q

What is the function of the visceral motor component of the oculomotor nerve (CN III)?

A
  • parasympathetic supply to constrictor pupillae & ciliary muscles
33
Q

What is the component of the trochlear nerve (CN IV)?

A

Somatic motor

34
Q

What is the function of the somatic motor component of the trochlear nerve (CN IV)?

A
  • supply one muscle of eye
35
Q

What is the component of the abducens nerve (CN VI)?

A

Somatic motor

36
Q

What is the function of the somatic motor component of the abducens nerve (CN IV)?

A
  • supply one muscle of eye
37
Q

What carries the sense of taste to the anterior 2/3 of the tongue? (not a CN)

A

Chorda tympani

38
Q

Which nerve is for blood gases and blood pressure?

A
Glossopharyngeal nerve (CN IV)
Visceral motor