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Flashcards in Cranial Nerve Deck (68):
1

Identify a and b

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a: olfactor nerve (CN I)

b: optic nerve (CN II)

2

Identify "c" and "d"

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c: oculomotor nerve (CN III)

d: Trochlear nerve (CN IV)

3

Identify e and f 

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e: trigeminal nerve (CN V)

f: Abducent n. (CN VI) 

4

Identify "g" and "h"

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g: facial n. (CN VII)

h: Vestibular (CN VIII) 

5

Identify i and j

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i: hypoglossal n. (CN XII)

j: Glossopharyngeal n. (CN IX)

6

Identify K and L

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K: Vagus (CN X)

L: Accessory n. (CN XI) 

7

Olfactory nerve is what CN?

I

8

Hypoglossal n. is what CN nerve?

XII

9

What is CN II

Optic n.

10

What is CN XI

Accessory n.

11

What CN is Oculomotor n.

CN III

12

Which is CN X

Vagus n.

13

Which CN is Glossopharyngeal n.

CN IX

14

CN IV

Trochlear n.

15

CN VIII

Vestibulocochlear n.

16

Which CN is Trigeminal n.

CN V

17

Which CN is Facial n.

CN VII 

18

CN VI

Abducent n. 

19

What foramen does the Olfactory n. go through

Cribiform plate of ethmoid

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20

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

  • Special sensory: smell
  • Structures innervated: olfactory mucosa

21

What is the end of the olfactory n. called?

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olfactory bulb 

22

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

olfactory nerves

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23

What foramen does the optic nerve travel through?

Optic canal

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24

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

  • Special sensory: vision
  • Structures innervated: Retina 

25

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

optic tract 

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26

What foramen does CN III (Oculomotor nerve) pass through 

Superior orbital fissure

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27

What type of innervation does the oculomotor n. supply?

  • Somatic motor
  • Parasympathetic 

28

2 main branches of oculomotor n.

Superior and inferior division

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29

What foramen does the Trochlear nerve pass through 

Superior orbital fissure

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30

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

  • Somatic motor
  • Superior Oblique m. 

31

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

  • Opthalmic (CN V1)
  • Maxillary (CN V2)
  • Mandibular  (CN V3)

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32

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

  • Superior orbital fissure
  • Supraorbital Foramen 

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33

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

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

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34

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

  • Frontal n.

            - Supraorbital n. 

            - Supratrochlear n. 

  • Lacrimal n.
  • Nasocilliary n. and its branches 

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35

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

Foramen rotundum (picture shown); Infraorbital foramen 

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36

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

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

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37

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

  • Zygomatic n.
  • Infraorbial n.
  • Greater and lesser palatine n.
  • Superior alveolar n. 

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38

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

  • Foramen Ovale; Mandibular foramen; Mental foramen 

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39

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

  • 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) 

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40

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

  • Inferior alveolar n.

         -- Mental n. 

  • Lingual n
  • Auriculotemporal n. 
  • Buccal n. 

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41

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

N. to mylohyoid 

42

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

Superior orbital fissure 

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43

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

  • Somatic motor
  • Lateral rectus. m 

44

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

  • Internal acoustic meatus (pictured)
  • Stylomastoid foramen 

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45

What type of innervation does the facial nerve supply

  • Somatic motor
  • Special sensory (taste)
  • Parasympathetic 

46

structures innervated by facial nerve

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

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47

Major branches of the facial nerve that supply somatic motor innervation

To Zanzibar By Motor Car

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

 

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48

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

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

49

Major branch of facial n. that supplies parasympathetic motor 

Greater petrosal 

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50

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

internal acoustic meatus 

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51

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

  • Special sensory (hearing; balance)
  • Cochlea; vestibule

52

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

  • vestibular n.
  • Cochlear n.

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53

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

Jugular foramen 

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54

What type of innervation does th Glossopharyngeal nerve supply

  • Somatic motor
  • Somatic sensory
  • Special sensory (taste)
  • Parasympathetic
  • Visceral sensory 

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55

What are the major branches off of the glossopharyngeal n

  • Tympanic n.
  • Lesser petrosal n. 

56

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

Jugular foramen 

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57

What type of innervation does the vagus nerve supply

  • Somatic motor
  • Somatic sensory
  • Special sensory (taste)
  • Parasympathetic
  • Visceral sensory 

58

Structures innervated by Vagus n

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

59

Major branches of vagus n.

  • recurrent laryngeal n.
  • Superior laryngeal n

        - internal and external laryngeal n

  • esophageal plexus
  • anterior and posterior vagal trunks 

60

What foramen does the accessory n. travel through

jugular foramen 

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61

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

  • somatic motor
  • trapezius m.
  • Sternocleidomastoid m. 

62

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

hypoglossal canal 

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63

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

  • somatic motor
  • all tongue mm. (except palatoglossus)

64

What are the 4 parasympathetic ganglia of the head

  • ciliary ganglion
  • otic ganglion
  • Pterygopalatine
  • Submandibular 

65

Parasympathetic innervation to cillary m. and constrictor pupillae m. 

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

66

List steps in parasympathetic pathway to parotid gland

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

67

Name NEW parasympathetic pathway to Lacrimal gland

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

68

List parasympathetic pathway to submandibular and sublingual glands 

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

1) -> Submandibular gland 

2) -> back to lingual n. -> Sublingual nerve