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Large Animal Anatomy > Trigeminal & Facial Nerves > Flashcards

Trigeminal & Facial Nerves Flashcards

1
Q

What is the main sensory nerve to the head?

A

trigeminal N

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2
Q

Trigeminal N is (sensory/motor/mixed).

A

mixed

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3
Q

Trigeminal N is motor to ___________ and sensory to ________.

A

muscles of mastication
skin of head

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4
Q

(T/F) The trigeminal nerve is sensory for taste and contains PSNS axons.

A

False - neither

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5
Q

List the 5 muscles of mastication.

A
  1. masseter
  2. temporalis
  3. medial pterygoid
  4. lateral pterygoid
  5. rostral belly of digastricus
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6
Q

All the muscles of mastication (open/close) the mouth except _______ which (opens/closes) the mouth.

A

close
rostral belly of digastricus
opens

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7
Q

List the 3 branches of the Trigeminal nerve.

A

ophthalmic
maxillary
mandibular

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8
Q

The ophthalmic nerve is (motor/sensory/mixed).

A

sensory (to structures around eye)

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9
Q

What three nerves branch from the ophthalmic nerve?

A
  1. lacrimal N
  2. frontal N
  3. nasociliary N
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10
Q

The maxillary nerve is (sensory/motor/mixed).

A

sensory

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11
Q

List the 3 branches of the maxillary nerve.

A
  1. cornual branch N
  2. pterygopalatine N
  3. infraorbital N
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12
Q

The pterygopalantine nerve splits and supplies most of the nasal cavity via _______, hard palate via _______, and soft palate via _______.

A

caudal nasal N
major palatine N
minor palatine N

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13
Q

The pterygopalatine N supplies ___________ axons to the lacrimal gland and glands of nasal cavity via ________ to stimulate secretion.

A

parasympathetic postganglionic
pterygopalatine ganglion

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14
Q

What nerve is sensory to the upper lip and upper teeth?

A

infraorbital N (branch of maxillary)

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15
Q

The mandibular nerve is (sensory/motor/mixed).

A

mixed

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16
Q

The mandibular nerve is motor to ______ and sensory to ______.

A

muscles of mastication
head ventral to facial crest

17
Q

Which branch of the mandibular N is motor?

A

masticatory N

18
Q

_______ N supplies motor innervation to the masseter M.

A

masseteric N

19
Q

________ N supplies motor innervation to the temporalis M.

A

caudal deep temporal N

20
Q

What are the 4 branches of the mandibular nerve that are sensory?

A
  1. buccal N
  2. auriculotemporal N
  3. lingual N
  4. inferior alveolar N
21
Q

What nerve is sensory to rostral 2/3 of the tongue? Which is sensory to all lower teeth and lower lip?

A

lingual N
inferior alveolar N

22
Q

The facial N is (sensory/motor/mixed).

A

mixed

23
Q

What is the sensory ganglion of the facial N called?

A

geniculate ganglion

24
Q

The facial N is motor to _________ and sensory to ________.

A

muscles of facial expression
skin of the ear canal

25
Q

(T/F) The facial N is sensory for taste on the rostral 2/3 of the tongue.

A

True

26
Q

The facial N supplies (SNS/PSNS) innervation to what structures?

A

PSNS
lacrimal gland, mandibular salivary gland, sublingual salivary gland, glands in nasal cavity

27
Q

What is the only branch of the facial N that is sensory? What is it sensory to?

A

internal auricular branch
skin of ear canal + taste

28
Q

List the motor branch of the facial N based on what it innervates:

  1. cervicoscutularis + cervicoauricularis Mm
  2. caudal belly of digastricus M
  3. zygomaticoscutularis & zygomaticoauricularis Mm + orbicularis oculi M
  4. muscles that move nostrils, lips, cheeks
  5. muscles that move lower lip & cheek
  6. cutaneous colli M
A
  1. caudal auricular N
  2. digastric branch
  3. auriculopalpebral N
  4. buccal branches
  5. marginal mandibular branch
  6. cervical branch
29
Q

The facial N is referred to as __________ N.

A

intermediofacial

30
Q

Term for bundle of axons between facial and vestibulocochlear Nn with axons for taste buds on the rostral 2/3 of the tongue and PSNS to salivary glands.

A

chorda tympani

31
Q

If a lip laceration, you need a(n) __________ N block.

A

infraorbital

32
Q

If an upper eyelid laceration, you need to block ___________ N to desensitize but ___________ N to paralyze orbicularis oris M.

A

supraorbital
auriculopalpebral

33
Q

To remove the eye such as in “cancer eye” in cattle, what two blocks can you use? Which is one injection vs. four?

A
  1. peterson eye block (one injection)
  2. four-point retrobulbar block (4)

Large Animal Anatomy (41 decks)

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