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RUSVM Gross Anatomy II > Exam II - Cranial Nerves > Flashcards

Exam II - Cranial Nerves Flashcards

1
Q

Which cranial nerve provides touch sensation to the medial canthus?

A

Opthalmic

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2
Q

Which cranial nerve innervates the tongue?

A

Hypoglossal (motor), Mandibular (sensory), Glossopharyngeal (sensory), & Facial (sensory; taste)

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3
Q

Which cranial nerve innervates the upper right canine tooth?

A

Right Maxillary

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4
Q

Olfactory Nerve passes through ____________.

A

Cribriform plate

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5
Q

Optic Nerve passes through ____________.

A

Optic canal

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6
Q

Oculomotor Nerve passes through ____________.

A

Orbital fissure

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7
Q

Trochlear Nerve passes through ____________.

A

Orbital fissure

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8
Q

Opthalmic branch of Trigeminal Nerve passes through ____________.

A

Orbital fissure

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9
Q

Maxillary branch of Trigeminal Nerve passes through ____________.

A

round foramen and rostral alar foramen

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10
Q

Mandibular branch of Trigeminal Nerve passes through ____________.

A

oval foramen

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11
Q

Abducens Nerve passes through ____________.

A

Orbital fissure

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12
Q

Facial Nerve passes through ____________.

A

Stylomastoid foramen (motor fibers) and internal acoustic meatus

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13
Q

Vestibulocochlear Nerve passes through ____________.

A

Internal acoustic meatus

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14
Q

Glossopharyngeal Nerve passes through ____________.

A

Jugular foramen and tympanooccipital fissure

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15
Q

Vagus Nerve passes through ____________.

A

Jugular foramen and tympanooccipital fissure

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16
Q

Spinal Accessory Nerve passes through ____________.

A

Jugular foramen and tympanooccipital fissure

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17
Q

Hypoglossal Nerve passes through ____________.

A

Hypoglossal canal

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18
Q

Olfactory nerve: sensory or motor?

A

Sensory (smell) from olfactory epithelium

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19
Q

Optic nerve: sensory or motor?

A

Sensory (vision) from retina

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20
Q

Oculomotor nerve: sensory or motor?

A

Motor to D, M, & V rectus mm., ventral oblique and levator palpebrae superioris m. Parasympathetic to ciliary ganglion (iris sphincter m.)

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21
Q

Trochlear nerve: sensory or motor?

A

Motor to dorsal oblique m.

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22
Q

Opthalmic branch of trigeminal nerve: sensory or motor?

A

Sensory from globe, periorbita, nasal mucosa, medial aspect of palpebrae

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23
Q

Maxillary branch of trigeminal nerve: sensory or motor?

A

Sensory from upper lip, nasal mucosa, lateral aspect of palpebrae

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24
Q

Mandibular branch of trigeminal nerve: sensory or motor?

A

Both. SENSORY from lower jaw, tongue (taste and touch from rostral 2/3) and auriculotemporal area and MOTOR to muscles of mastication

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25
Q

Abducens nerve: sensory or motor?

A

Motor to retractor bulbi m. and lateral rectus m.

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26
Q

Facial nerve: sensory or motor?

A

Both. MOTOR to muscles of facial expression and SENSORY (taste) from the rostral 2/3 of the tongue Parasympathetic to salivary and lacrimal glands

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27
Q

Vestibulocochlear nerve: sensory or motor?

A

Sensory for hearing and balance

28
Q

Glossopharyngeal nerve: sensory or motor?

A

Both. SENSORY from the tongue (taste to caudal 1/3) and pharyngeal mucosa (touch) and MOTOR to the pharynx Parasympathetic to parotid and mucosal glands

29
Q

Vagus nerve: sensory or motor?

A

Both. Some MOTOR to larynx, pharynx, and esophagus. SENSORY to ear canal and epiglottis. PARASYMPATHETIC to heart, lungs, and abdomen.

30
Q

Spinal Accessory nerve: sensory or motor?

A

MOTOR to trapezius, omotransversarius, sternocephalicus, and cleidocephalicus. Also motor to larynx via recurrent laryngeal n.

31
Q

Hypoglossal nerve: sensory or motor?

A

MOTOR to extrinsic and intrinsic mm of the tongue

32
Q

Which cranial nerve is responsible for the pupillary constriction reflex?

A

CN III: Occulomotor nerve. The PNS to iris sphincter muscles are responsible for the reflex

33
Q

Which nerve runs with the lingual artery?

A

Hypoglossal n.

34
Q

Which nerve comes down the neck and terminates on the trapezius muscle?

A

CN XI: Spinal Accessory nerve

35
Q

Which cranial nerves have parasympathetic fibers?

A

CN III: Occulomotor CN VII: Facial CN IX: Glossopharyngeal CN X: Vagus

36
Q

Which cranial nerve provides motor innervation to the dorsal oblique m?

A

Trochlear n.

37
Q

Which cranial nerve provides sensory innervation for hearing and balance?

A

Vestibulocochlear n.

38
Q

Which cranial nerve provides motor innervation to the pharynx?

A

Glossopharyngeal n.

39
Q

Which cranial nerve provides motor innervation to the retractor bulbi m and lateral rectus m?

A

Abducens n.

40
Q

Which cranial nerve provides parasympathetic innervation to the heart, lungs, and abdomen?

A

Vagus n.

41
Q

Which cranial nerve has sensory innervation from the upper lip, nasal mucosa, and lateral aspect of palpebrae?

A

Maxillary branch of Trigeminal n.

42
Q

Which cranial nerve has sensory innervation from the globe, periorbita, nasal mucosa, and medial aspect of palpebrae?

A

Opthalmic branch of Trigeminal n.

43
Q

Which cranial nerve has sensory innervation from the lower jaw, tongue, and auriculotemporal area?

A

Mandibular branch of Trigeminal n.

44
Q

Which cranial nerve(s) demonstrate(s) both MOTOR and SENSORY innervation?

A
  • Trigeminal n (CN V)
  • Facial n (CN VII)
  • Glossopharyngeal n (CN IX)
  • Vagus n (CN X)
45
Q

Name the cranial nerve(s) that pass(es) through the jugular foramen and tympanooccipital fissure

A
  • Glossopharyngeal n. (CN IX)
  • Vagus n. (CN X)
  • Spinal Accessory n. (CN XI)

(Cranial nerves 9, 10, & 11)

46
Q

Name the cranial nerve(s) that pass(es) through the hypoglossal canal

A

Hypoglossal n. (CN XII)

(hypoglossal n. is #2 in photo)

47
Q

Name the cranial nerve(s) that pass(es) through the oval foramen

A

Mandibular br. of Trigeminal n. (CN V)

48
Q

Name the cranial nerve(s) that pass(es) through the optic canal

A

Optic n. (CN II)

(Optic canal is #1 in photo)

49
Q

Name the cranial nerve that passes through the round foramen and rostral alar foramen

A

Maxillary br. of Trigeminal n. (CN V) & maxillary a.

(rostral alar foramen is #3 in picture)

50
Q

Name the cranial nerve(s) that pass(es) through the internal acoustic meatus

A
  • Facial n. (CN VII)*
  • Vestibulocochlear n. (CN VIII)

*Facial n. also passes through stylomastoid foramen

51
Q

Which cranial nerve(s) demonstrate only sensory (not motor) innervation?

A
  • Olfactory
  • Optic
  • Vestibulocochlear
52
Q

Which cranial nerve(s) demonstrate(s) only motor (not sensory) innervation?

A
  • Oculomotor
  • Trochlear
  • Abducens
  • Spinal Accessory
  • Hypoglossal

Motorists Only Travel Around Scenic Highways

53
Q

Which cranial nerve(s) demonstrate both sensory & motor innervation?

A
  • Trigeminal
  • Facial
  • Glossopharyngeal
  • Vagus

Both Twins Finally Gambled in Vegas

54
Q

All of the muscles of mastication are going to be innervated by which cranial nerve.

Where does this nerve pass through?

A

Mandibular br. of Trigeminal n. (CN V)

oval foramen

55
Q

Platysma m., Orbicularis oculi m., orbicularis oris m., levator nasolabialis m., and buccinator m. are all innervated by which cranial nerve?

A

Facial n. (CN VII)

56
Q

The cribriform foramina and the cribriform plate are associated with which cranial nerve?

A

CN1 - Olfactory n.

57
Q

The oculomotor n. (CN III) provides parasympathetic innervation to which muscle?

A

iris sphincter m. (pupillary constriction)

58
Q

The dorsal, ventral, and medial rectus mm. are innervated by which nerve?

A

Occulomotor n. (CN III)

59
Q

The ventral oblique m. is innervated by which nerve?

A

CN III - Occulomotor n.

60
Q

The levator palpebrae superioris m. is innervated by which nerve?

A

CN III - Occulomotor n.

61
Q

The dorsal oblique m. is innervated by which nerve?

A

CN IV - Trochlear n.

62
Q

What is the only branch of Trigeminal n (CN V) that has motor innervation?

A

Mandibular branch of Trigeminal n. has both sensory and motor

63
Q

The lateral rectus and retractor bulbi mm. are innervated by which nerve?

Where does this nerve pass through?

A

CN VI: Abducens

Passes through the orbital fissure

64
Q

The caudal belly of the digastricus m. is innervated by which nerve?

A

CN VII - Facial n.

65
Q

Which nerve provides innervation to the mandibular arcade?

A

Inferior alveolar n.

(from the mandibular branch of Trigeminal n)

66
Q

Which nerve provides innervation to the maxillary arcade?

A

maxillary n.

67
Q

The **foramen lacerum **in the equine is the equivalent of which foramina in the dog?

Why is this important?

A

foramen lacerum = oval foramen + jugular foramen

**For facial nerves, the nerves that go through the oval foramen in the dog, for instance, would go through the foramen lacerum in the horse.

RUSVM Gross Anatomy II (23 decks)

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