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Anatomy Final > Cranial Nerve > Flashcards

Cranial Nerve Flashcards

1
Q

Identify a and b

A

a: olfactor nerve (CN I)
b: optic nerve (CN II)

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2
Q

Identify “c” and “d”

A

c: oculomotor nerve (CN III)
d: Trochlear nerve (CN IV)

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3
Q

Identify e and f

A

e: trigeminal nerve (CN V)
f: Abducent n. (CN VI)

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4
Q

Identify “g” and “h”

A

g: facial n. (CN VII)
h: Vestibular (CN VIII)

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5
Q

Identify i and j

A

i: hypoglossal n. (CN XII)
j: Glossopharyngeal n. (CN IX)

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6
Q

Identify K and L

A

K: Vagus (CN X)

L: Accessory n. (CN XI)

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7
Q

Olfactory nerve is what CN?

A

I

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8
Q

Hypoglossal n. is what CN nerve?

A

XII

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9
Q

What is CN II

A

Optic n.

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10
Q

What is CN XI

A

Accessory n.

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11
Q

What CN is Oculomotor n.

A

CN III

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12
Q

Which is CN X

A

Vagus n.

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13
Q

Which CN is Glossopharyngeal n.

A

CN IX

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14
Q

CN IV

A

Trochlear n.

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15
Q

CN VIII

A

Vestibulocochlear n.

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16
Q

Which CN is Trigeminal n.

A

CN V

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17
Q

Which CN is Facial n.

A

CN VII

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18
Q

CN VI

A

Abducent n.

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19
Q

What foramen does the Olfactory n. go through

A

Cribiform plate of ethmoid

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20
Q

What type of innervation does CN I (olfactory n.) give? To what structures does it give it to?

A
  • Special sensory: smell
  • Structures innervated: olfactory mucosa
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21
Q

What is the end of the olfactory n. called?

A

olfactory bulb

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22
Q

What is the name of the nerves coming off of the olfactory bulb and going through the cribriform plate?

A

olfactory nerves

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23
Q

What foramen does the optic nerve travel through?

A

Optic canal

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24
Q

What type of innervation does the optic nerve bring? What structures does it innervate?

A
  • Special sensory: vision
  • Structures innervated: Retina
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25
Q

What is the part of the optic nerve prior to the optic chiasm?

A

optic tract

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26
Q

What foramen does CN III (Oculomotor nerve) pass through

A

Superior orbital fissure

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27
Q

What type of innervation does the oculomotor n. supply?

A
  • Somatic motor
  • Parasympathetic
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28
Q

2 main branches of oculomotor n.

A

Superior and inferior division

29
Q

What foramen does the Trochlear nerve pass through

A

Superior orbital fissure

30
Q

What type of innervation does Trochlear n. supply. What structure does it innervate?

A
  • Somatic motor
  • Superior Oblique m.
31
Q

What are the three main divisions of the Trigeminal nerve (CN V)

A
  • Opthalmic (CN V1)
  • Maxillary (CN V2)
  • Mandibular (CN V3)
32
Q

What foramina does the Opthalmic division of Trigeminal n. (CN V1) pass through

A
  • Superior orbital fissure
  • Supraorbital Foramen
33
Q

What type of innervation does CN V1 (opthalmic division of Trigeminal) suppy? What structures does it innervate

A
  • Somatic sensory
  • skin on forehead; upper eyelid; dorsum of nose
34
Q

What are the major branches of CN V​1 (opthalmic division of Trigeminal)

A
  • Frontal n.
  • Supraorbital n.
  • Supratrochlear n.
  • Lacrimal n.
  • Nasocilliary n. and its branches
35
Q

What foramina does the maxillary division of Trigeminal (CN V2) pass through?

A

Foramen rotundum (picture shown); Infraorbital foramen

36
Q

What type of innervation does maxillary division of Trigeminal (CN V2) suppy? What structures are innervated

A
  • Somatic sensory
  • Skin of lower eyelid; upper cheeck; side of nose; upper lip
37
Q

What are the major branches off maxillary division of Trigeminal (CN V2

A
  • Zygomatic n.
  • Infraorbial n.
  • Greater and lesser palatine n.
  • Superior alveolar n.
38
Q

What foramina does the Mandibular division of Trigminal nerve (CN V3) pass through?

A
  • Foramen Ovale; Mandibular foramen; Mental foramen
39
Q

What type of innrvation does mandibular division of Trigminal nerve (CN V3) supply? What structures does it innervate?

A
  • Somatic sensory and Somatic motor
  • Muscles of mastication; “Tensor” mm.; skin of lower cheek; temporal region; mandible; lower lip; anterior 2/3 tongue (somatic sensory)
40
Q

What are the major branches of mandibular division of Trigminal nerve (CN V3) that supply somatic sensory

A
  • Inferior alveolar n.

– Mental n.

  • Lingual n
  • Auriculotemporal n.
  • Buccal n.
41
Q

What branch off of mandibular division of Trigminal nerve (CN V3) supplies motor innervation

A

N. to mylohyoid

42
Q

What foramen does the Abducent n. (CN VI) travel through

A

Superior orbital fissure

43
Q

What type of innervation does the abducent n. (CN VI) supply? What structures does it supply?

A
  • Somatic motor
  • Lateral rectus. m
44
Q

What foramina does the facial nerve (VII) travel through?

A
  • Internal acoustic meatus (pictured)
  • Stylomastoid foramen
45
Q

What type of innervation does the facial nerve supply

A
  • Somatic motor
  • Special sensory (taste)
  • Parasympathetic
46
Q

structures innervated by facial nerve

A
  • muscles of facial expression
  • anterior 2/3 tongue (taste)
  • lacrimal gland
  • submandibular gland
  • sublingual gland
47
Q

Major branches of the facial nerve that supply somatic motor innervation

A

To Zanzibar By Motor Car

  • Temporal
  • Zygomatic
  • Buccal
  • Marginal Mandibular
  • Cervical
  • Posterior auricular
48
Q

Major branch of facial n. that supplies special sensory (taste)

A
  • Chorda Tympani n. (hitchhikes on Lingual n. (CN V3)
49
Q

Major branch of facial n. that supplies parasympathetic motor

A

Greater petrosal

50
Q

What foramen does the Vestibulocochlear nerve (CN VIII) travel through

A

internal acoustic meatus

51
Q

What type of innervation does the vestibulocochlear n supply. What structures are innervated?

A
  • Special sensory (hearing; balance)
  • Cochlea; vestibule
52
Q

What are the two main branches of the vestibulocochlear n (CN VIII)

A
  • vestibular n.
  • Cochlear n.
53
Q

What foramen does the Glossopharyngeal n (CN IX) pass through?

A

Jugular foramen

54
Q

What type of innervation does th Glossopharyngeal nerve supply

A
  • Somatic motor
  • Somatic sensory
  • Special sensory (taste)
  • Parasympathetic
  • Visceral sensory
55
Q

What are the major branches off of the glossopharyngeal n

A
  • Tympanic n.
  • Lesser petrosal n.
56
Q

What foramen does the vagus n (CN X) travel through

A

Jugular foramen

57
Q

What type of innervation does the vagus nerve supply

A
  • Somatic motor
  • Somatic sensory
  • Special sensory (taste)
  • Parasympathetic
  • Visceral sensory
58
Q

Structures innervated by Vagus n

A
  • Sensory and muscles of larynx
  • muscles of pharynx and palate
  • epiglottis
  • thoracic and abdominal viscera
59
Q

Major branches of vagus n.

A
  • recurrent laryngeal n.
  • Superior laryngeal n
  • internal and external laryngeal n
  • esophageal plexus
  • anterior and posterior vagal trunks
60
Q

What foramen does the accessory n. travel through

A

jugular foramen

61
Q

What type of innervation does the accessory nerve (CN XI) supply. What structures are innervated

A
  • somatic motor
  • trapezius m.
  • Sternocleidomastoid m.
62
Q

What foramen does the hypoglossal nerve (CN XII) pass through

A

hypoglossal canal

63
Q

What type of innrvation does hypoglossal n. supply. What structures are innervated

A
  • somatic motor
  • all tongue mm. (except palatoglossus)
64
Q

What are the 4 parasympathetic ganglia of the head

A
  • ciliary ganglion
  • otic ganglion
  • Pterygopalatine
  • Submandibular
65
Q

Parasympathetic innervation to cillary m. and constrictor pupillae m.

A

CN III -> Ciliary ganglion (synapse) -> Short ciliary n. (CN V1) -> Target

66
Q

List steps in parasympathetic pathway to parotid gland

A

CN IX -> Tympanic n. -> Tympanic plexus -> Lesser petrosal n. -> Otic ganglion (synapse) -> hitchhike on auricotemporal n (CNV3) -> parotid gland

67
Q

Name NEW parasympathetic pathway to Lacrimal gland

A

CN VII -> Greater Petrosal n. -> N. to pterygoid canal -> Pterygopalatine ganglion (Synapse) -> direct branches from ganglion -> Target

68
Q

List parasympathetic pathway to submandibular and sublingual glands

A

CN VII -> Chorda Tympani n. -> Hitchhike on Lingual n. (CN V3) -> Submandibular ganglion (Synapse)

1) -> Submandibular gland
2) -> back to lingual n. -> Sublingual nerve

Anatomy Final (14 decks)

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