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Veterinary Anatomy > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

Somatic motor function of vagus n.?

A

somatic motor - esophagus and mm. of larynx

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2
Q

Where does the hypoglossal n. emerge?

A

hypoglossal canal

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3
Q

What is the name of cranial nerve X?

A

vagus n.

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4
Q

Function of vestibulocochlear n.?

A

hearing and vestibular sensation (acceleration/gravity)

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5
Q

Function of the mandibular branch of Cr. n. V?

A
  • motor - contraction of masticatory mm.
  • sensory:
    • buccal branch - inside of cheek
    • Inferior alveolar branch - mandubular dental arcade
    • Lingual branch - somatosensation to rostral 2/3 of tongue
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6
Q

What extraocular m. does NOT arise from around the orbital fissue?

A

m. obliquus ventralis (originates from dorsal border of orbit and inserts on the lateral aspect of the eye globe)

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7
Q

What Cr. nn. exits the braincase via the jugular foramen?

A

Cr. nn. IX, X, and XI

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8
Q

Motor or sensory? optic n.

A

sensory

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9
Q

Somatic motor function of glossopharyngeal n.?

A

pharyngeal swallowing mm.

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10
Q

Where does the vagus n. emerge?

A

jugular foramen (inside tympanooccipital fissure)

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11
Q

Motor or sensory? abducent n.

A

motor (somatic)

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12
Q

What is the name of cranial nerve VIII?

A

vestibulocochlear n.

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13
Q

What nn. emerge from the optical fissue?

A

Cr. n. III, IV, VI, and ophthalmic br. of V

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14
Q

What is the name of cranial nerve IV?

A

trochlear n.

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15
Q

Function of hypoglossal n.?

A

intrinsic and extrinsic mm. of tongue

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16
Q

Function of abducent n.?

A

extraocular mm. contraction (m. rectus lateralis and m. retractor bulbi)

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17
Q

What are the 3 main brr. of the trigeminal n.?

A
  • ophthalmic n.
  • maxillary n.
  • mandibular n.
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18
Q

Where does the oculomotor n. emerge?

A

orbital fissure (orbitorotundum foramen in BOV)

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19
Q

Function of the maxillary branch of Cr. n. V?

A

somatosensation to the face (from the maxilla dorsad, except small section by the eye)

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20
Q

Where does the optic n. emerge?

A

optic canal to eye globe (within periorbita)

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21
Q

What is the name of cranial nerve VI?

A

abducent n.

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22
Q

Motor or sensory? facial n.

A

both - sensory and motor (somatic and autonomic)

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23
Q

Motor or sensory? hypoglossal n.

A

motor (somatic)

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24
Q

Where does the vestibulocochlear n. emerge?

A

internal acoustic meatus, DOES NOT LEAVE THE SKULL

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25
Q

Motor or sensory? accessory n.

A

motor (somatic)

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26
Q

Function of ophthalmic branch of Cr. n. V?

A

somatosensation to the face (dorsal/medial to the eye) and nasal vestibule

27
Q

Where does the glossopharyngeal n. emerge?

A

jugular foramen (inside tympanooccipital fissure)

28
Q

Function of Cr. n. IV?

A

extraocular mm. contraction (m. obliquus dorsalis)

29
Q

Where does the accessory n. enter and emerge?

A

enter foramen magnum, leaves jugular foramen (inside tympanooccipital fissure)

30
Q

What is the name of cranial nerve IX?

A

glossopharyngeal n.

31
Q

Motor or sensory? trigeminal n.

A

both - sensory and motor (somatic)

32
Q

Function of Cr. n. XII?

A
  • Motor - mm. of facial expression
  • Sensory - taste to rostral 2/3 of face
33
Q

Motor or sensory? trochlear n.

A

motor (somatic)

34
Q

Function of Cr. n. VII?

A
  • somatic motor - tone of facial expression mm. (eyelids, facial skin, ears and lips)
  • autonomic motor - lacrimal/salivary glands
  • sensory - taste to rostral 2/3 of tongue
35
Q

Motor or sensory? olfactory n.

A

sensory

36
Q

Function of Cr. n. XI?

A

Contraction of neck mm.

37
Q

Motor or sensory? vestibulocochlear n.

A

sensory

38
Q

What is the name of cranial nerve XI?

A

accessory n.

39
Q

Which nn. contain parasympathetic axons?

A

Cr. nn. III, VII, IX, and X

40
Q

Where does the ophthalmic branch of the trigeminal n. emerge?

A

orbital fissure (foramen orbitorotundum in BOV)

41
Q

Where does the olfactory n. emerge?

A

cribiform plate (ethmoid bone)

42
Q

Motor or sensory? vagus n.

A

both - sensory and motor (somatic and autonomic)

43
Q

Function of Cr. n. I?

A

olfaction

44
Q

What nn. provide the sensation of taste?

A
  • facial n. - rostral 2/3rd
  • glossopharyngeal n. - caudal 1/3 rd
45
Q

What is the name of cranial nerve VII?

A

facial n.

46
Q

What is the name of cranial nerve XII?

A

hypoglossal n.

47
Q

Where does the mandibular branch of the trigeminal n. emerge?

A

oval foramen (foramen lacerum in EQ)

48
Q

Function of Cr. n. II?

A

vision

49
Q

What is the name of cranial nerve V?

A

trigeminal n.

50
Q

Motor or sensory? glossopharyngeal n.

A

both - sensory and motor (somatic and autonomic)

51
Q

Where does the facial n. emerge?

A

internal acoustic meatus –> stylomastoid foramen

52
Q

What is the name of cranial nerve II?

A

optic n.

53
Q

Motor or sensory? oculomotor n.

A

motor (somatic and autonomic)

54
Q

Function of Cr. n. III?

A
  • somatic - extraocular mm. contraction
  • autonomic - pupillary constriction
55
Q

What is the name of cranial nerve III?

A

oculomotor n.

56
Q

Where does the abducent n. emerge?

A

orbital fissure (foramen orbitorotundum in BOV)

57
Q

What is the name of cranial nerve I?

A

olfactory n.

58
Q

Autonomic function of Cr. n. X?

A

autonomic motor - all viscera of thorax and most of abdomen

59
Q

Sensory function of Cr. n. X?

A

visceral sensation

60
Q

Autonomic function of Cr. n. IX?

A

salivary glands

61
Q

Sensory function of Cr. n. IX?

A

taste of caudal 1/3 of tongue

62
Q

What is the name given to the kind of eye movement that allows them to target them in the same direction (work as mirror images of each other)?

A

conjugate eye movement

63
Q

What is the term given to the inability to direct eyes in the same direction?

A

strabismus

Veterinary Anatomy (7 decks)

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