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Anatomy HFF > Cranial Nerves 10/3/16 > Flashcards

Cranial Nerves 10/3/16 Flashcards

1
Q

What is CN I?

A

Olfactory nerve

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2
Q

Where does CN I run through?

A

Cribriform Plate (Foramina)

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3
Q

What is CN II?

A

Optic Nerve

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4
Q

Where does CN II run through?

A

Optic Canal

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5
Q

What is CN III?

A

Oculomotor

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6
Q

What does CN III run through?

A

Superior orbital fissure

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7
Q

What is CN IV?

A

Trochlear nerve

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8
Q

What does CN IV run through?

A

Superior orbital fissure

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9
Q

What is CN V?

A

Trigeminal nerve

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10
Q

What does CN V run through?

A

V1-Superior orbital fissure
V2-Foramen rotundum
V3-Foramen ovale

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11
Q

What is CN VI?

A

Abducens nerve

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12
Q

Where does CN VI run through?

A

Superior orbital fissure

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13
Q

What is CN VII?

A

Facial nerve

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14
Q

What does CN VII run through?

A

Internal acoustic meatus

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15
Q

What is CN VIII?

A

Vestibulocochlear nerve

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16
Q

Where does CN VIII run through?

A

Internal acoustic meatus

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17
Q

What is CN IX?

A

Glossopharyngeal nerve

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18
Q

Where does CN IX run through?

A

Jugular foramen

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19
Q

What is CN X?

A

Vagus nerve

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20
Q

Where does CN X run through?

A

Jugular foramen

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21
Q

What is CN XI?

A

Accessory nerve

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22
Q

Where does CN XI run through?

A

Jugular foramen

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23
Q

What is CN XII?

A

Hypoglossal nerve

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24
Q

What does CN XII run through?

A

Hypoglossal canal

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25
Q

Which CN has special sensory functions, is only sensory, and part of the telencephalon?

A

CN I - Olfactory nerve

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26
Q

True olfactory fibers run from olfactory epithelium in nasal cavity thru cribriform plate and innervate what?

A

Olfactory bulb

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27
Q

Which CN has special sensory functions, is only sensory, and part of the diencephalon?

A

CN II - Optic nerve

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28
Q

T/F

Most fibers from the optic nerve cross at the optic chiasm but some do not cross.

A

True

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29
Q

What CN control the ocular muscles?

A

CN III

  • CN IV
  • CN VI
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30
Q

Which CN controls all ocular muscles except the lateral rectus and superior oblique?

A

CN III - Oculomotor nerve

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31
Q

What CN only controls the superior oblique muscle?

A

CN IV - Trochlear nerve

32
Q

What does the Trochlear nerve control?

A

Superior oblique muscle

33
Q

What does the Abducens nerve control?

A

Lateral rectus

34
Q

What CN controls only the lateral rectus?

A

CN VI - abducens nerve

35
Q

What are the muscles that CN III controls?

A
  • superior rectus
  • inferior rectus
  • medial rectus
  • inferior oblique
36
Q

What muscle of the upper eyelid does CN III innervate?

A

Levator palpebrae superioris

37
Q

What visceral motor control does CN III do?

A

Pupillary constrictors via the Pupillary sphincter and ciliary muscle

38
Q

What is the only CN with contralateral symptoms in nuclear lesion? (Left nerve comes from the right nuclei)

A

CN IV - Trochlear nerve

39
Q

What is the only CN to emerge from dorsal surface?

A

CN IV - Trochlear nerve

40
Q

What is the function of the lateral rectus?

A

Abduction of the eye

41
Q

What are the three branches of CN V?

A
  • Ophthalmic V1
  • Maxillary V2
  • Mandibular V3
42
Q

What does CN V innervate?

A
  • Muscles of Mastication
  • Oral floor muscles
  • tensor tympani
  • Tensor veli palatini
43
Q

T/F Branches of other CNs join up with CN V

A

True

44
Q

T/F CN V does sensation of the face, forehead, and tongue

A

True

45
Q

The Trigeminal nerve does general sensory for what areas?

A
  • Nasal mucosa

- Anterior 2/3 of tongue

46
Q

What are the muscles of mastication?

A
  • Temporalis
  • Masseter
  • Medial Pterygoid
  • Lateral pterygoid
47
Q

What are two visceral hitchhikers that join with CN V?

A
  • CN VII on V2 and V3 to get to glands in the face

- CN IX on V3 to get to post. auricular to get to parotid gland

48
Q

What are three branches that come from the Opthalmic branch of the Trigeminal nerve?

A
  • Frontal nerve
  • Nasocilliary nerve
  • Lacrimal nerve (sensory only)
49
Q

What are the branches that come from the maxillary branch of the trigeminal nerve?

A
  • Posterior, Middle, Anterior superior alveolar nerves
  • Infraorbital nerve
  • Zygomatic nerve
50
Q

What are the branches that come from the mandibular branch of the trigeminal nerve?

A
  • Auriculotemporal nerve
  • Buccal nerve
  • Masseteric branch
  • Deep temporal branch
  • Pterygoid branches
  • Masseteric branches
  • Inferior alveolar nerve
  • Lingual nerve
51
Q

What nerve runs medial to the mandible?

A

The lingual nerve of the mandibular branch of the trigeminal nerve

52
Q

What is it called when CN VII and the lingual nerve of CN V runs together?

A

Chorda Tympani

53
Q

What are the functions of the Chorda tympani?

A
  • Innervates glands (submandibular, sublingual)

- Taste on anterior 2/3 of tongue

54
Q

What nerve runs within the mandible?

A

Inferior alveolar nerve of the mandibular branch of the trigeminal nerve

55
Q

Which CN innervates the mylohyoid and anterior belly of the digastric?

A

Inferior alveolar nerve of the Mandibular branch of CN V

56
Q

What nerve innervates the pulp of the teeth?

A

Inferior alveolar nerve of the Mandibular branch of CN V

57
Q

What nerve innervates the skin and lips?

A

Mental nerve

58
Q

What are the 5 main branches of CN VII?

A
  • Temporal
  • Zygomatic
  • Buccal
  • Cervical
  • Posterior Auricular
59
Q

What are 4 other branches that come off of the Facial nerve?

A
  • Greater Petrosal nerve
  • Chorda Tympani nerve
  • Nerve to stapedius
  • Branches to stylohyoid and posterior digastric
60
Q

What does the greater petrosal nerve innervate?

A

Lacrimal and Nasal glands

61
Q

What does the nerve to stapedius innervate?

A

Stapedius muscle

62
Q

What does the main branch of CN VII run through?

A

Parotid gland

63
Q

Does CN VII innervate the parotid gland?

A

No

64
Q

What is unique about CN VIII?

A

It has only special sensory nerves

65
Q

What do the vestibular senses of CN VIII do?

A

Help with proprioception

66
Q

What are the motor functions of CN IX?

A
  • Pharyngeal constrictors
  • Stylpharyngeus
  • Parotid gland
67
Q

What are the sensory functions of CN IX the glossopharyngeal nerve?

A
  • Posterior tongue
  • Posterior oral pharynx
  • Mucosa of middle ear
  • Skin of external ear
  • Tympanic membrane
68
Q

What is the special sensory functions of CN IX?

A

Taste in posterior 1/3 of tongue

-Chem and Baro receptors (Carotid sinus)

69
Q

What are the sensory functions of the Vagus nerve or CN X?

A
  • Viscera in the abdomen and thorax
  • Laryngopharynx and larynx
  • Taste in epiglottis
  • Ear and external acoustic meatus
  • Post. Cranial fossa
70
Q

What are the motor functions of CN X?

A
  • Pharyngeal constrictors (along with CN IX)

- Laryngeal muscles

71
Q

What are the special sense of CN X?

A
  • Pressure receptors -Aortic arch

- Chemoreceptors - Aortic body

72
Q

How does CN XI enter the skull?

A

Through the foramen magnum

73
Q

Where does CN XI exit the skull?

A

jugular foramen

74
Q

T/F

The hypglossal nerve is a motor only CN

A

True

75
Q

What cranial nerves are special sensory only?

A

CN I
CN II
CN VIII

76
Q

What CN are motor only nerves?

A 
CN III
CN IV
CN VI
CN XI
CN XII
77
Q

Which CN are mixed motor and sensory?

A

CN V
CN VII
CN IX
CN X

Anatomy HFF (12 decks)

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