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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
Motor or sensory? accessory n.
motor (somatic)
26
Function of ophthalmic branch of Cr. n. V?
somatosensation to the face (dorsal/medial to the eye) and nasal vestibule
27
Where does the glossopharyngeal n. emerge?
jugular foramen (inside tympanooccipital fissure)
28
Function of Cr. n. IV?
extraocular mm. contraction (m. obliquus dorsalis)
29
Where does the accessory n. enter and emerge?
enter foramen magnum, leaves jugular foramen (inside tympanooccipital fissure)
30
What is the name of cranial nerve IX?
glossopharyngeal n.
31
Motor or sensory? trigeminal n.
both - sensory and motor (somatic)
32
Function of Cr. n. XII?
* Motor - mm. of facial expression * Sensory - taste to rostral 2/3 of face
33
Motor or sensory? trochlear n.
motor (somatic)
34
Function of Cr. n. VII?
* 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
Motor or sensory? olfactory n.
sensory
36
Function of Cr. n. XI?
Contraction of neck mm.
37
Motor or sensory? vestibulocochlear n.
sensory
38
What is the name of cranial nerve XI?
accessory n.
39
Which nn. contain parasympathetic axons?
Cr. nn. III, VII, IX, and X
40
Where does the ophthalmic branch of the trigeminal n. emerge?
orbital fissure (foramen orbitorotundum in BOV)
41
Where does the olfactory n. emerge?
cribiform plate (ethmoid bone)
42
Motor or sensory? vagus n.
both - sensory and motor (somatic and autonomic)
43
Function of Cr. n. I?
olfaction
44
What nn. provide the sensation of taste?
* facial n. - rostral 2/3rd * glossopharyngeal n. - caudal 1/3 rd
45
What is the name of cranial nerve VII?
facial n.
46
What is the name of cranial nerve XII?
hypoglossal n.
47
Where does the mandibular branch of the trigeminal n. emerge?
oval foramen (foramen lacerum in EQ)
48
Function of Cr. n. II?
vision
49
What is the name of cranial nerve V?
trigeminal n.
50
Motor or sensory? glossopharyngeal n.
both - sensory and motor (somatic and autonomic)
51
Where does the facial n. emerge?
internal acoustic meatus --\> stylomastoid foramen
52
What is the name of cranial nerve II?
optic n.
53
Motor or sensory? oculomotor n.
motor (somatic and autonomic)
54
Function of Cr. n. III?
* somatic - extraocular mm. contraction * autonomic - pupillary constriction
55
What is the name of cranial nerve III?
oculomotor n.
56
Where does the abducent n. emerge?
orbital fissure (foramen orbitorotundum in BOV)
57
What is the name of cranial nerve I?
olfactory n.
58
Autonomic function of Cr. n. X?
autonomic motor - all viscera of thorax and most of abdomen
59
Sensory function of Cr. n. X?
visceral sensation
60
Autonomic function of Cr. n. IX?
salivary glands
61
Sensory function of Cr. n. IX?
taste of caudal 1/3 of tongue
62
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)?
conjugate eye movement
63
What is the term given to the inability to direct eyes in the same direction?
strabismus

Veterinary Anatomy (7 decks)

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