Cranial Nerves Flashcards

1
Q

CN I (1)

A

Olfactory nerve

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2
Q

CN II (2)

A

Optic nerve

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3
Q

CN III (3)

A

Oculomotor nerve

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4
Q

CN IV (4)

A

Trochlear nerve

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5
Q

CN V (5)

A

Trigeminal nerve

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6
Q

CN VI (6)

A

Abducens nerve

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7
Q

CN VII (7)

A

Facial nerve

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8
Q

CN VIII (8)

A

Vestibulocochlear nerve

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9
Q

CN IX (9)

A

Glossopharyngeal nerve

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10
Q

CN X (10)

A

Vagus nerve

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11
Q

CN XI (11)

A

Accessory (Spinal) nerve

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12
Q

CN XII (12)

A

Hypoglossal nerve

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13
Q

Mnemonic for Cranial Nerve names

A
Oh 
Oh
Oh
To
Touch 
And 
Feel
Virgin
Girl's 
Vagina
Ah
Heaven
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14
Q

Mnemonic for Cranial Nerve actions

A
Some
Say
Marry
Money
But
My
Brother
Says
Big
Brains
Matter
More
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15
Q

What structure/bone does CN I exit through? Which section of the cranial fossa is this apart of?

A

CN I exits through the Crista Galli of the Ethmoid bone

- Anterior Cranial Fossa

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16
Q

What is the function (1) of CN I?

A

Sensory: smell

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17
Q

What structure/bone does CN II exit through? Which section of the cranial fossa is this apart of?

A

CN II exits through the Optic Canal of the Sphenoid bone

- Middle Cranial Fossa

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18
Q

What is the function (1) of CN II?

A

Sensory: sight

19
Q

What structure/bone does CN III exit through? Which section of the cranial fossa is this apart of?

A

CN III exits through the Superior Orbital Fissure of the Sphenoid bone
- Middle Cranial Fossa

20
Q

What are the functions (3) of CN III?

A
  • Motor: eyeball movement and upper eyelid movement

- Parasympathetic: pupillary light reflex

21
Q

What structure/bone does CN IV exit through? Which section of the cranial fossa is this apart of?

A

CN IV exits through the Superior Orbital Fissure of the Sphenoid bone
- Middle Cranial Fossa

22
Q

What is the function (1) of CN IV?

A

Motor: eyeball movement

23
Q

What is the name of CN V1? What structure/bone does CN V1 exit through? Which section of the cranial fossa is this apart of?

A

CN V1 is the Ophthalmic branch

  • CN V1 exits through the Superior Orbital Fissure of the Sphenoid bone
  • Middle Cranial Fossa
24
Q

What is the name of CN V2? What structure/bone does CN V2 exit through? Which section of the cranial fossa is this apart of?

A

CN V2 is the Maxillary branch

  • CN V2 exits through the Foramen Rotundum of the Sphenoid bone
  • Middle Cranial Fossa
25
Q

What is the name of CN V3? What structure/bone does CN V3 exit through? Which section of the cranial fossa is this apart of?

A

CN V3 is the Mandibular branch

  • CN V3 exits through the Foramen Ovale of the Sphenoid bone
  • Middle Cranial Fossa
26
Q

What are the functions (2) of CN V1?

A
  • Sensory: facial sensation

- Sympathetic: pupillary dilation

27
Q

What is the function (1) of CN V2?

A

Sensory: facial sensation

28
Q

What are the functions (2) of CN V3?

A
  • Motor: chewing

- Sensory: facial sensation

29
Q

What structure/bone does CN VI exit through? Which section of the cranial fossa is this apart of?

A

CN VI exits through the Superior Orbital Fissure of the Sphenoid bone
- Middle Cranial Fossa

30
Q

What is the function (1) of CN VI?

A

Motor: eyeball movement

31
Q

What structure/bone does CN VII exit through? Which section of the cranial fossa is this apart of?

A

CN VII exits through the Internal Acoustic Meatus of the Temporal bone
- Posterior Cranial Fossa

32
Q

What are the functions (6) of CN VII?

A
  • Motor: facial expression, eyelid closing, stapedius muse (dampens sound)
  • Sensory: taste (anterior 2/3 of tongue)
  • Parasympathetic: lacrimation, salivation (submandibular glands, sublingual glands)
33
Q

What structure/bone does CN VIII exit through? Which section of the cranial fossa is this apart of?

A

CN VIII exits through the Internal Acoustic Meatus of the Temporal bone
- Posterior Cranial Fossa

34
Q

What are the functions (2) of CN VIII?

A
  • Sensory: hearing (cochlea), balance (vestibular apparatus)
35
Q

What structure/bone does CN IX exit through? Which section of the cranial fossa is this apart of?

A

CN IX exits through the Jugular Foramen of the Occipital bone
- Posterior Cranial Fossa

36
Q

What are the functions (7) of CN IX?

A
  • Motor: stylopharyngeus muscle (elevates pharynx and larynx)
  • Sensory: taste (posterior 1/3 of tongue), sensation of posterior 1/3 of tongue, tonsils, middle ear and pharynx
  • Parasympathetic: salivation (parotid gland)
37
Q

What structure/bone does CN X exit through? Which section of the cranial fossa is this apart of?

A

CN X exits through the Jugular Foramen of the Occipital bone

- Posterior Cranial Fossa

38
Q

What are the functions (10) of CN X?

A
  • Motor: swallowing, elevation of palate, talking, coughing, gag reflex
  • Sympathetic: peripheral chemoreceptors (hypoxemia)
  • Parasympathetic: heart rate, GI peristalsis, sweating, vasovagal syncope
39
Q

What structure/bone does CN XI exit through? Which section of the cranial fossa is this apart of?

A

CN XI exits through the Jugular Foramen of the Occipital bone
- Posterior Cranial Fossa

40
Q

What are the functions (2) of CN XI?

A
  • Motor: turning head (sternocleidomastoid), shrugging (trapezius)
41
Q

What structure/bone does CN XII exit through? Which section of the cranial fossa is this apart of?

A

CN XII exits through the Hypoglossal Canal of the Occipital bone
- Posterior Cranial Fossa

42
Q

What is the function (1) of CN XII?

A
  • Motor: tongue movement
43
Q

Which muscle of the tongue is NOT innervated by CN XII?

A

Palatoglossus muscle is inverted by CN X (Vagus n.)