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GM PNS > Exam 2 CN IX > Flashcards

Exam 2 CN IX Flashcards

1
Q

What type of fibers does the glossopharyngeal nerve carry?

A

Motor, sensory, autonomic; therefore it is mixed!

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2
Q

Where does the glossopharyngeal carry motor information to

A

The stylopharyngeus

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3
Q

Where does the glossopharyngeal carry sensory information from

A

From the pharynx

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4
Q

Where does the glossopharyngeal carry taste information from

A

The posterior tongue

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5
Q

Where does the glossopharyngeal carry parasympathetic information to

A

Leading ultimately to the parotid and other glands

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6
Q

Where do the cell bodies for motor fibers carried in the glossopharyngeal arise from

A

They are located in the superior part of the nucleus ambiguus

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7
Q

Where do preganglionic parasympathetic fibers arise from in the glossopharyngeal nerve

A

The inferior salivary nucleus

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8
Q

Where are afferent sensory fibers terminated with the glossopharyngeal

A

In the solitary nucleus

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9
Q

What are the two ganglia associated with the glossopharyngeal

A

Superior and inferior ganglia

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10
Q

Which peripheral ganglion is smaller and usually thought as a separate part

A

The superior ganglion

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11
Q

General sensory information carried in glossopharyngeal is from where

A

The nasopharynx, oropharynx, and portion of the tongue posterior to the sulcus terminalis, uvula, and palatine tonsils

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12
Q

General sensation from what cavity is also carried in a branch of the glossopharyngeal

A

Tympanic cavity

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13
Q

Where are the cell bodies located for general sensory info of the glossopharyngeal

A

The inferior ganglion where information is then conveyed to the CNS and fibers synapse in the spinal nucleus of trigeminal nerve

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14
Q

Taste information from the tongue posterior to the sulcus terminalis is carried by neurons from where?

A

The inferior ganglion

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15
Q

Where is taste information carried from in the glossopharyngeal

A

Tongue posterior to the sulcus terminalis

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16
Q

Axons carrying taste information have cells that synapse where

A

Superior portion of the solitary nucleus

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17
Q

Cells carrying visceral afferent information in the glossopharyngeal from where

A

Carotid sinus and carotid body

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18
Q

Incoming visceral afferent information from the inferior ganglion synapse where?

A

Lower part of solitary nucleus

19
Q

What does the nucleus ambiguus contribute to three cranial nerves and what are those cranial nerves

A

Lower motor neurons to CN IX, X, XI

20
Q

Axons from the lower motor neurons from nucleus ambiguus that are carried in glossopharyngeal will innervate what muscle

A

Stylopharyngeus

21
Q

What gives rise to preganglionic parasympathetic axons carried in the glossopharyngeal

A

The inferior salivary nucleus

22
Q

Where do preganglionic parasympathetic fibers in the glossopharyngeal nerve synaps

A

The otic ganglion

23
Q

Postganglionic fibers after synapsing in the otic ganglion supply what?

A

Parotid glands, buccal glands, and inferior labial glands

24
Q

What is the A.O. Of the glossopharyngeal nerve

A

Lateral aspect of the superior aspect of the MO

25
Q

Where does the glossopharyngeal exit the skull

A

Via the jugular foramen

26
Q

Where is the superior ganglion for the glossopharyngeal nerve located

A

Inside the cranium

27
Q

Where is the inferior ganglion for the glossopharyngeal nerve located

A

Beyond the jugular foramen outside the cranium

28
Q

What is another name for the inferior ganglion of the glossopharyngeal nerve

A

The petrosal ganglion

29
Q

Where does the tympanic nerve arise from?

A

The inferior ganglion

30
Q

What does the tympanic branch carry

A

Preganglionic parasympathetic fibers and sensory

31
Q

What is the course of the tympanic branch of the glossopharyngeal nerve

A

Through the tympanic canaliculus into the tympanic cavity, in the cavity this is where it receives postganglionic sympathetic fibers

32
Q

Where does the tympanic branch of glossopharyngeal nerve recieve postganglionic sympathetic fibers from and what will it then form

A

Superior cervical ganglion forming the tympanic plexus

33
Q

What does the tympanic plexus carry

A

Somatosensory info from tympanic cavity, pharyngotympanic tube, and mastoid air cells

34
Q

After pregang para fiber pass through the tympanic plexus what do they reform as

A

The lesser petrosal nerve that travels through the lesser petrosal canal to otic ganglion

35
Q

Post gang para fibers from otic ganglion are carried in what to parotid, buccal, and inferior labial glands

A

CN V3

36
Q

Where does the carotid branch enter and what is it carrying

A

The inferior ganglion carrying afferent info from chemoreceptors in carotid body and baroreceptors in carotid sinus

37
Q

What info being carried in the glossopharyngeal nerve is similar to the vagus

A

The carotid branch from inferior ganglion carrying afferent info from chemoreceptors in carotid body and baroreceptors in carotid sinus

38
Q

Pharyngeal branches convey sensory information from the mucosa of what?

A

Mucosa of the pharynx

39
Q

Pharyngeal branches will combine with vagal branches to form what?

A

Pharyngeal plexus near middle pharyngeal plexus

40
Q

The muscular branch leaves glossopharyngeal nerve to supply what

A

Stylopharyngeus

41
Q

The remaining branches of glossopharygeal nerve reach what

A

Oral cavity

42
Q

The tonsillar branches convey sensory info from where

A

Palatine tonsils and oral mucosa

43
Q

Lingual branches carry what from where

A

General sensory and taste info from tongue posterior to sulcus terminalis

GM PNS (12 decks)

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