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RUSVM Anatomy II > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

What is the name for cranial nerve VI?

A

Abducent nerve

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2
Q

What cranial nerve number is the oculomotor nerve?

A

CN III

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3
Q

What is the name of cranial nerve VIII?

A

Vestibulocochlear nerve

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4
Q

What is the name of cranial nerve XII?

A

Hypoglossal nerve

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5
Q

Which cranial nerve number is glossopharyngeal nerve?

A

CN IX

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6
Q

The ___ is CN X and ____ is CN XI.

A

Vagus

Accessory

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7
Q

What cranial nerve number is the facial nerve?

A

VII

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8
Q

True/False. The trochlear nerve is CN IV and the trigeminal nerve is CN V.

A

True

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9
Q

What nerve is CN I?

A

Olfactory nerve

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10
Q

Which nerve is CN II?

A

Optic nerve

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11
Q

Which nerve has both motor and sensory fibers and emerges through the stylomastoid foramen?

A

Facial nerve (CN VII)

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12
Q

Which nerve has a dorsal branch that supplies motor innervation to the trapezius muscle and cleidocephalicus muscle?

A

Accessory nerve (CN XI)

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13
Q

Where is the olfactory nerve found within the ethmoid bone?

A

Ethmoidal conchae and the cribiform plate

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14
Q

Which nerves innervate the extrinsic muscles of the eye?

A

Oculomotor nerve
Trochlear nerve
Abducent nerve

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15
Q

What nerves make up BLIMA?

A 
Buccal
Lingual
Inferior alveolar
Mylohyoid
Auriculotemporal
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16
Q

Which nerve is the sensory component to the medial canthus?

A

Opthalmic nerve/ branch

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17
Q

which nerve is the sensory component to the lateral canthus?

A

Maxillary nerve/branch

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18
Q

Which nerves come out of the tympano-occipital fissure?

A

Glossopharyngeal (IX)
Vagus (X)
Accessory (XI)

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19
Q

Which nerve can you find associated with the internal acoustic meatus on a sagitally sectioned skull?

A

Vestibulocochlear (VIII)

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20
Q

The facial nerve trunk lies deep to the _____ and emerges from the ____ caudal to the base of the ear.

A

Parotid salivary gland; styomastoid foramen

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21
Q

Various branches of the facial nerve supply motor innervation to ___, ___, and the caudal part of the ____ muscles

A

Stylohyoideus m., caudal auricular muscles, and digastricus muscle

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22
Q

What muscle does the mandibular branch of the trigeminal nerve supply motor innervation?

A

Cranial part of the digastricus muscle

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23
Q

Are the auriculopalpebral and buccal branches of the facial nerve motor or sensory?

A

Motor

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24
Q

What do the branches of the auriculotemporal nerve unit with?

A
  • Dorsal buccal branch of the facial nerve

- Auriculopalpebral branch of the facial nerve

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25
Q

True/False. The mental nerve is a branch off the maxillary nerve.

A

False. It comes from the mandibular branch of the trigeminal nerve

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26
Q

Which nerve is mostly sensory but provides motor fibers to the mylohyoid muscle and muscles of mastication?

A

CN V - Trigeminal nerve

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27
Q

Which nerve has fibers that leave the fundus of the eye at the optic disk and enter the cranium via the optic foramen?

A

CN II - Optic nerve

28
Q

Where does the hypoglossal nerve (CN XII) exit the cranium through and what does it supply?

A

Hypoglossal foramen; motor to the tongue

29
Q

What kind of nerve is CN IX and what does it innervate?

A

Mixed nerve (sensory/motor); innervates pharynx and tongue

30
Q

What does the cranial laryngeal nerve provide motor and sensory fibers to?

A

Motor- cricothyroid muscle

Sensory- laryngeal mucosa

31
Q

Which of the following arteries has an extra-cranial portion that regresses in the feline and bovine?

a. External carotid a.
b. Internal carotid a.
c. Occipital a.
d. All the above

A

b. Internal carotid a.

32
Q

Which branch off the Maxillary artery accompanies a nerve through the mandibular canal?

A

Inferior alveolar artery and nerve

33
Q

What artery supplies structures within the periorbita?

A

External opthalmic artery

34
Q

What supplies the lower arcade of teeth and inferior labia via. the mental arteries?

A

Inferior alveolar artery

35
Q

What is the major blood supply to the hard palate?

A

Major palatine artery

36
Q

Which of the following is FALSE regarding the infraorbital artery?

a. Its the continuation of the maxillary artery after it passes the maxillary canal
b. It supplies the alveoli of the upper teeth
c. It supplies the superficial nasal region after it emerges through the infraorbital foramen
d. All the above are true

A

a. Its the continuation of the maxillary artery after it passes the maxillary canal
- There is no maxillary canal its the maxillary FORAMEN

37
Q

Where does the maxillary branch of CN V exit before it enters the maxillary foramen?

A

Rostral alar foramen

38
Q

What passes through the mandibular canal?

A

Inferior alveolar artery, and vein

Inferior alveolar nerve of the mandibular nerve of CN V

39
Q

The inferior alveolar artery is a branch of ____ artery, while the inferior alveolar nerve is a branch off ____ nerve.

A

Maxillary artery ;Mandibular nerve

40
Q

In which animals is the orbitorotundum foramen present?

A

Pigs and ruminants

41
Q

Which nerves pass through the orbitorotundum foramen?

A 
Maxillary nerve of CN V
Opthalmic nerve of CN V
Oculomotor nerve (CN III)
Trochlear nerve (CN IV)
Abducent nerve (CN VII)
42
Q

Which nerve is seen passing through the oval foramen in the dog and ruminant?

A

Mandibular nerve of CN V

43
Q

Which nerve passes through the round foramen and opens into the alar canal in the dog and horse?

A

Maxillary nerve of CN V

44
Q

Cranial Nerve XI found within what foramen?

A

Magunum foramen

45
Q

Which nerves are considered to be “purely” sensory and which are considered to be “purely” motor?

A

Sensory: CN I, II, VIII
Motor: CN III, IV, VI, XI, XII

46
Q

True/False. Glossopharyngeal nerve is only considered a sensory nerve.

A

False. Its a mixed nerve and its both motor and sensory

47
Q

What are the somatic and visceral constituents of the glossopharyngeal nerve?

A

Somatic: stylopharyngeus muscle
Visceral: parotid and zygomatic salivary glands

48
Q

What are the nerves that contain autonomic (PSNS) components?

A

CN III, VII, IX, and X

49
Q

True/False. The maxillary artery courses rostral to the TMJ before entering the alar canal via the caudal alar foramen.

A

True.

50
Q

The auriculotemporal nerve is a branch off the _____ nerve, while the auriculopalpebral nerve is a branch off the ____ nerve.

A

Trigeminal nerve

Facial nerve

51
Q

Which nerve’s autonomous zone is the medial canthas of the eye?

A

Opthalamic branch of the Trigeminal nerve

52
Q

Which of the following is an intrinsic muscle of the eye and will constrict the pupil via the ciliary ganglion?

a. Optic nerve
b. Trochlear nerve
c. Oculomotor nerve
d. Abducent nerve

A

c. Oculomotor nerve

53
Q

What are the afferent and efferent nerves of the menace response?

A

Afferent: CN II - Optic Nerve
Efferent: CN III - Oculomotor nerve

54
Q

Which nerve is damaged if you see a lateral strabismus, and droopy upper eyelid?

A

Oculomotor nerve

55
Q

What muscles does the facial nerve provide motor fibers to?

A

Caudal belly of the digastricus muscle

Muscles of facial expression

56
Q

What nerve innervates the retractor bulbi muscle and lateral rectus muscle?

A

Abducens nerve - CN VI

57
Q

Which nerve innervates the tongue (motor component)?

A

Hypoglossal nerve CN XII

58
Q

Which nerves are involved in the palpebral reflex of the lateral canthus?

A

Afferent: Maxillary branch of the CN V
Efferent: Facial nerve- CN VII

59
Q

Which nerves are involved in the sensation of taste to the tongue?

A

Rostral 2/3 –> Facial nerve (VII)

Caudal 1/3 –> Glossopharyngeal nerve (IX)

60
Q

Which nerve will innervate the dorsal oblique muscle?

A

Trochlear nerve (IV)

61
Q

What muscles does the Oculomotor innervate?

A

DVM (dorsal, ventral and medial) rectus
Ventral rectus
Levator palpebrae superioris muscles

62
Q

Which nerve is damaged if you see an oblique deviation of the pupil?

A

Trochlear nerve

63
Q

What are the afferent and efferent nerves involved in the palpebral reflex of the medial canthus?

A

Afferent: Opthalmic branch of CN V.
Efferent: Facial nerve - CN VII

64
Q

Which nerves are involved in the sensation of touch to the tongue?

A

Rostral 2/3 –> Mandibular branch of V (specifically lingual)
Caudal 1/3 –> Glossopharyngeal nerve (IX)

65
Q

What would you see if the abducens nerve was lesioned?

A

Medial strabismus

66
Q

What lesions would you see if the Vestibulocochlear nerve was lesioned?

A

Nystagmus
Head tilt
Circling
Balance problems

67
Q

What nerves are part of the gag reflex?

A

Vagus nerve

Glossopharyngeal nerve

RUSVM Anatomy II (10 decks)

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