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Head and Neck > Lecture 6- The Trigeminal Nerve > Flashcards

Lecture 6- The Trigeminal Nerve Flashcards

1
Q

What are the two resident nerve fiber types of CN V?

A

GSA (face)

SVE (muscles of the 1st arch)

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2
Q

What are the acquired fiber types of CN V?

A

SA (taste)

GVE (parasympathetics to smooth muscle and glands)

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3
Q

What are the 3 subdivisions of the trigeminal nerve and where does each emerge from the skull?

A

V1-Ophthlamic- Superior Orbital Fissure
V2- Maxillary- Foramen rotundum
V3- Mandibular- Foramen ovale

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4
Q

Where is the trigeminal ganglion located?

A

Trigeminal impression (Meckel’s Cave)

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5
Q

Which branches of the trigeminal nerve pass through the cavernous sinus?

A

V1, V2

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6
Q

What are the 4 main branches of the ophthlamic nerve (V1)?

A

Meningeal (tentorial) nerve
Frontal nerve
Lacrimal nerve
Nasociliary nerve

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7
Q

What are the two branches of the frontal nerve?

A

supraorbital nerve

supratrochlear nerve

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8
Q

What are the 5 branches of the nasociliary nerve?

A 
sensory root to ciliary ganglion
long ciliary nerves
posterior ethmoidal nerve
anterior ethmoidal nerve
infratrochlear nerve
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9
Q

What are the 2 branches of the anterior ethmoidal nerve?

A

internal and external nasal branches

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10
Q

Which branch of CN V carries sensory information from the tentorium cerebelli?

A

V1-Ophthlamic- Meningeal branch

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11
Q

What are the three branches of V1 that traverse the superior orbital fissure?

A

Frontal nerve
Lacrimal nerve
Nasociliary nerve

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12
Q

What is the nasociliary nerve called after it gives of the poterior and anterior ethmoidal nerves?

A

infratrochlear nerve

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13
Q

How do the anterior and posterior ethmoidal nerves enter into the ethmoidal air cells?

A

through the anterior and posterior ethmoidal foramina

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14
Q

where do the anterior and posterior ethmoidal nerves branch from?

A

Nasociliary nerve

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15
Q

Where do the internal and external nasal branches come from?

A

the anterior ethmoidal nerve which is a branch of the nasociliary nerve which is part of V1

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16
Q

Which nerve control dilation of the pupil?

A

Long ciliary nerve (branch of nasociliary from V1)

17
Q

Which nerve controls the sphincter pupillae?

A

Short Ciliary nerves form ciliary ganglion from sensory root of nasociliary nerve (V1 branch)

18
Q

What are the 5 Main branches of V2 that arise in the pterygopalatine fossa?

A

Zygomatic Nerve
Communicating branches (2) with PPG
Posterior Superior Alveolar Nerve
Infraorbital Nerve

19
Q

What are the two branches of the zygomatic nerve that arise in the inferior orbital fissure?

A

Zygomaticofacial

Zygomaticotemporal

20
Q

Which part of V1 does the Zygomaticotemporal communicate with?

A

Lacrimal Nerve of V1

21
Q

Where is the pterygopalatine ganglion suspended from?

A

V2

22
Q

What are the 7 branches arising from the pterygopalatine ganglion?

A 
Orbital branches
Medial and Lateral posterior superior nasal nerves
nasopalatine nerves
greater and lesser palatine nerves
pharyngeal nerves
23
Q

How do structures pass from the pterygopalatine fossa into the nasal cavity?

A

sphenopalatine foramen

24
Q

Where do the greater and lesser palatine nerves aquire taste fibers from?

A

Nerve to the pterygoid canal (from VII) joins in pterygopalatine ganglion

25
Q

What are the 9 main branches of the mandibular nerve V3?

A 
Meningeal branch (nervus spinosus)
Nerve to the medial pterygoid 
Nerve to the lateral pterygoid
Deep temporal nerves (anterior and posterior)
Masseteric nerve
Buccal Nerve (Long buccal nerve)
Auriculotemporal nerve
Lingual nerve
Inferior alveolar nerve
26
Q

What nerve does the lingual nerve receive? where does it originate from?

A

Chorda tympani (from CN VII)

27
Q

What muscular branch arises from the inferior alveolar nerve of V3?

A

nerve to the mylohyoid

28
Q

What are the terminal branches of the inferior alveolar nerve?

A

mental and incisive nerve

29
Q

What two structures enter the cranial cavity through the foramen spinosum?

A 
middle meningeal artery
nervous spinosus (meningeal branch from V3)
30
Q

What nerve wraps around the middle meningeal artery?

A

auriculotemporal nerve (branch of V3)

Head and Neck (9 decks)

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