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First Aid: Neurology > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

What are the names of these nerves?

  • CN I
  • CN II
  • CN III
  • CN IV
  • CN V
  • CN VI
  • CN VII
  • CN VIII
  • CN IX
  • CN X
  • CN XI
  • CN XII
A
  • CN I - Olfactory nerve
  • CN II - Optic nerve
  • CN III - Oculomotor nerve
  • CN IV - Trochlear nerve
  • CN V - Trigeminal nerve
  • CN VI - Abducens nerve
  • CN VII - Facial nerve
  • CN VIII - Vestibulocochlear nerve
  • CN IX - Glossopharyngeal nerve
  • CN X - Vagus nerve
  • CN XI - Accessory nerve
  • CN XII - Hypoglossal nerve
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2
Q

What is the function of the Olfactory Nerve?

Sensory or motor?

A

Smell

Sensory

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3
Q

What is the function of the Optic Nerve?

Sensory or motor?

A

Sight

Sensory

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4
Q

What is the function of the Oculomotor Nerve?

Sensory or motor?

A
  • Eye movement (SR, IR, MR, IO)
  • Pupillary constriction (sphincter pupillae: Edinger-Westphal nucleus, muscarinic receptors)
  • Accomodation
  • Eyelid opening (levator palpebrae)
  • Motor
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5
Q

What is the function of the Trochlear Nerve?

Sensory or Motor?

A

Eye movement (SO)

Motor

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6
Q

What is the function of the Trigeminal Nerve?

Sensory or Motor?

A
  • Mastication
  • Facial sensation (ophthalmic, maxillary, mandibular divisions)
  • Somatosensation: anterior 2/3 of tongue
  • Both
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7
Q

What is the function of the Abducens Nerve?

Sensory or Motor?

A

Eye movement (LR)

Motor

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8
Q

What is the function of the Facial Nerve?

Sensory or Motor?

A
  • Facial movement
  • Taste: anterior 2/3 of tongue
  • Lacrimation
  • Salivation (submandibular, sublingual glands)
  • Eyelid closing (orbicularis oculi)
  • Stapedius muscle in ear
  • Both
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9
Q

What is the function of the Vestibulocochlear Nerve?

Sensory or Motor?

A

Hearing, balance

Sensory

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10
Q

What is the function of the Glossopharyngeal nerve?

Sensory or Motor?

A
  • Taste & somatosensation from posterior 1/3 of tongue
  • Swallowing
  • Salivation (parotid gland)
  • Monitoring carotid body & sinus chemo- & baroreceptors
  • Stylopharyngeus (elevates pharynx, larynx)
  • Both
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11
Q

What is the function of the Vagus Nerve?

Sensory or Motor?

A
  • Taste from epiglottic region
  • Swallowing
  • Soft palate elevation
  • Midline uvula
  • Talking
  • Coughing
  • Thoracoabdominal viscera
  • Monitoring aortic arch chemo- & baroreceptors
  • Both
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12
Q

What is the function of the Accessory Nerve?

Sensory or Motor?

A
  • Head turning
  • Shoulder shrugging (SCM, trapezius)
  • Motor
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13
Q

What is the function of the Hypoglossal Nerve?

Sensory or Motor?

A

Tongue movement

Motor

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14
Q

Corneal Reflex

  • Afferent
  • Efferent
A
  • Afferent: V1 ophthalmic (nasociliary branch)
  • Efferent: VII (temporal branch: orbicularis oculi)
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15
Q

Lacrimation Reflex

  • Afferent
  • Efferent
A
  • Afferent: V1
  • Efferent: VII
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16
Q

Jaw Jerk Reflex

  • Afferent
  • Efferent
A
  • Afferent: V3 (sensory - muscle spindle from masseter)
  • Efferent: V3 (motor - masseter)
17
Q

Pupillary Reflex

  • Afferent
  • Efferent
A
  • Afferent: II
  • Efferent: III
18
Q

Gag Reflex

  • Afferent
  • Efferent
A
  • Afferent: IX
  • Efferent: X

First Aid: Neurology (1 decks)

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