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Canine Anatomy > CRANIAL NERVES (E3) > Flashcards

CRANIAL NERVES (E3) Flashcards

1
Q

Cranial Nerve I

A

Olfactory

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2
Q

Cranial Nerve II

A

Optic

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3
Q

Cranial Nerve III

A

Oculomotor

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4
Q

Cranial Nerve IV

A

Trochlear

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5
Q

Cranial Nerve V

A

Trigeminal

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6
Q

What are the 3 branches of Trigeminal N?

A
  1. Opthalmic
  2. Maxillary
  3. Mandibular
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7
Q

Cranial Nerve VI

A

Abducens

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8
Q

Cranial Nerve VII

A

Facial

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9
Q

Cranial Nerve VIII

A

Vestibulocochlear

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10
Q

Cranial Nerve IX

A

Glossopharyngeal

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11
Q

Cranial Nerve X

A

Vagus

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12
Q

Cranial Nerve XI

A

Spinal Accessory

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13
Q

Cranial Nerve XII

A

Hypoglossal

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14
Q

What is CN I sensory to?

A

olfactory epithelium

CN I = opthalmic

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15
Q

What is CN II sensory to?

A

vistion from retina

CN II = optic

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16
Q

What is CN III motor to?

A

D, V, M rectus muscles of the eye, ventral oblique, and levator palpebrae superioris.
Parasympathetic (autonomic motor) to the iris sphincter m.

CN III = oculomotor

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17
Q

What is CN IV motor to?

A

dorsal oblique m

CN IV = trochlear

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18
Q

Which is the only branch of trigeminal with moth sensory and motor?

A

mandibular br.

CN V = Trigeminal

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19
Q

What is the Opthalmic br. of CN V sensory to?

A

globe (including cornea), periorbita, nasal mucosa, and the medial aspect of palpebrae

CN V = Trigeminal

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20
Q

What is the Maxillary br. of CN V sensory to?

A

upper lip, nasal mucosa, lateral aspect of palpebrae

CN V = Trigeminal

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21
Q

What is the Mandibular br. of CN V sensory to?

A

lower jaw and auriculotemporal area

CN V = Trigeminal

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22
Q

What is the Mandibular br. of CN V motor to?

A

muscles of mastication

CN V = trigeminal

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23
Q

What is CN VI motor to?

A

retractor bulbi m, lateral rectus m

CN VI = Abducens

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24
Q

What is CN VII motor to?

A

muscles of facial expression, amd parasympathetic (autonomic motor) to the salivary and lacrimal glands

CN VII = Facial

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25
What is CN VII **sensory** to?
taste from the rostral 2/3 of the tongue | CN VII = Facial
26
What is CN VIII **sensory** to?
hearing and balance | CN VIII = Vestibulocochlear
27
What is CN IX **sensory** to?
tongue and pharyngeal mucosa | CN IX = Glossophayngeal
28
What is CN IX **motor** to?
pharynx and parasympathetic (autonomic motor) to parotid and mucosal glands | CN IX = Glossopharyngeal
29
What is CN X **motor** to?
pharynx, esophagus, and parasympathetic (autonomic motor) to the thorax and abdomen | CN X = Vagus
30
What is CN X **sensory** to?
ear canal, epiglottis, thorax, abdomen
31
What is CN XI **motor** to?
trapezius, omotransversarius, sternocephalicus, cleidocephalicus, larynx, and recurrent laryngeal n. | CN XI = Spinal Accessory
32
What is CN XII **motor** to?
extrinsic and intrinsic muscles of the tongue
33
Olfactory N passes through **?**
passes through foramina in the cribiform plate of the ethmoid bone
34
Optic n passes through **?**
optic canal
35
Oculumotor n passes through **?**
Orbital fissure
36
Trochlear n passes through **?**
Orbital fissure
37
Opthalmic br of Trigeminal n passes through **?**
Orbital fissure
38
Maxillary br of Trigeminal n passes through **?**
Rostral alar foramen via round foramen
39
Mandibular br of Trigeminal n passes through **?**
Oval foramen
40
Abducens n passes through **?**
Orbital fissure
41
Facial n passes through **?**
Stylomastoid foramen and interna, acoustic meatus | "If you're smilin', you're stylin'"
42
Vestibulocochlear n passes through **?**
internal acoustic meatus
43
Glossopharyngeal n passes through **?**
Tympanooccipital fissure via the jugular foramen
44
Vagus n passes through **?**
Tympanooccipital fissure via jugular foramen
45
Spinal Accessory n passes through **?**
Tympanooccipital fissure via the jugular foramen
46
Hypoglossal n passes through **?**
Hypoglossal canal
47
How to test for olfactory n?
cotton ball with alcohol, looking for a sniffing action
48
How to test for optic n?
menace response (CN II sensory, CN VII motor), obstacle course, pupillary light reflex (CN II sensory, CN III motor)
49
How to test for Oculomotor n?
look for tracking, strabismus if DVM rectus muscles affected, droopy eyelid if levator palpebrae superioris is affected, oblique deviation of eye if ventral oblique is affected, absence of miosis (pupillary contraction) when light shined in
50
How to test for Trochelar n?
oblique deviation if dorsal oblique is affected
51
How to test Opthalmic br of Trigeminal?
corneal reflex, palpebral reflex on medial canthus
52
How to test Maxillary br of Trigeminal?
lateral canthus palpebral reflex upper lip/nasal mucosa response
53
How to test Mandibular br of Trigeminal?
lower lip/jaw (pinch and see response) to test sensory atrophy of muscles of mastication look for drop jaw
54
55
How to test for Abducens n?
corneal reflex - if no 3rd eyelid comes up then test the opthalmic br of trigeminal medial strabismus if lateral rectus muscle innervation affected
56
How to test for Facial n?
mainly testing motor- look for facial expression! eyebrows, ears, palpebrae, lips, etc.
57
How to test for Vestibulocochlear n?
vestibular portion - balance, posture, etc. May see circling, head tilt, nistagmus... cochlear portion - test hearing, make noise (out of sight)
58
How to test for Glossopharyngeal n?
gag reflex - open the mouth and put finger toward back of the tongue, looking for a wretch (gag reflex sensation of CN IX and motor of CN X)
59
How to test for Vagus n?
listen to HR and gut sounds, will need to hear something very wrong like tachycardia (HR increase w lesion, gut sounds decrease w lesion) test motor with gag reflex often don't test ear canal
60
How to test for Spinal Accessory n?
look for atrophy to skeletal muscles that it innervates
61
How to test for Hypoglossal n?
watch dog drink water or lick something, grab dog's tongue and see if you can pull it out of the mouth
62
What are the branches of the mandibular nerve (a br of Trigeminal)
inferior alveolar n, lingual n, auriculotemporal n
63
What does the inferior alveolar n innervate?
mandibular teeth. also gives off mental nerves that exit the mental foramina
64
What does the lingual nerve innervate?
base of the tongue (pain, touch, temperature from the rostral tongue)
65
What does the auriculotemporal nerve innervate?
auricle and skin rostral to the auricle (sensation)
66
Dysfunction of which 2 CN can lead to dysphagia? (difficulty swallowing)
CN IX, CN X

Canine Anatomy (22 decks)

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