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PNS > Exam 2- CN 9 > Flashcards

Exam 2- CN 9 Flashcards

1
Q

Glossopharyngeal carries what kind of fibers

A

Motor, sensory, and autonomic fibers

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2
Q

Glossohpharyngeal is a __________ cranial nerve

A

Mixed

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3
Q

CN9 gives motor innervation to

A

Stylopharyngeus

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4
Q

CN 9 gives sensory info from

A

The pharynx, including taste info from the posterior tongue

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5
Q

CN 9 gives parasympathetic info leading to the

A

Parotid and other glands

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6
Q

Motor fibers for CN9 arise from cell bodies located in

A

Superior part of nucleus ambiguus

Aka brachiomotor vs. somatomotor

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7
Q

Preganglionic parasympathetic fibers for CN 9 arise

A

From the inferior salivary nucleus

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8
Q

Afferent CN9 sensory fibers terminate in

A

Solitary nucleus

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9
Q

How many peripheral ganglia are associated with CN9

A

2

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10
Q

What are the peripheral ganglia associated with CN9

A

Superior ganglion-smaller

Inferior ganglion

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11
Q

Autonomic fibers for CN9 synapse in

A

The otic ganglion

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12
Q

General sensory info carried in CN9 is from

A

Nasopharynx, oropharynx, and portion of the tongue posterior to the sulcus terminal is, uvula, and palatine tonsils

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13
Q

General sensation from the________________ is also carried in CN9

A

Tympanic cavity

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14
Q

Tympanic cavity sensation is carried by CN9 and cell bodies are located in the ______________

A

Inferior ganglion.

Then info is conveyed to the CNS and synapse in the Spinal nucleus of trigeminal nerve

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15
Q

Taste info from posterior to the sulcus terminal is is carried by neuron from the _____________.

A

Inferior ganglion

Axons from these cells synapse in the Superior part of the solitary nucleus.

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16
Q

Incoming fibers from the inferior ganglion do synapse in the lower part of the solitary nucleus. They carry _______________ info from the ________ and _________.

A

Visceral afferent

Carotid sinus and carotid body

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17
Q

which part of the solitary nucleus is visceral afferent info from the carotid sinus and body synapse in

A

Lower part of solitary nucleus

18
Q

Nucleus ambiguus contributes LMN to what three CN

A

CN 9,10,11

19
Q

What kind of motor neurons innervated stylopharyngeus

A

LMN

20
Q

The inferior salivary nucleus gives rise to

A

Preganglionic parasympathetic axons

21
Q

The inferior salivary nucleus preganglionic parasympathetic fibers will synapse in

A

The otic ganglion

22
Q

After preganglionic parasympathetic fibers synapse in the otic ganglion they carry __________ fibers that supply the _______

A

Postganglionic

Parotid glands, buccal glands, and inferior labial glands

23
Q

What is the apparent origin of CN9

A

Lateral aspect, superior part of the medulla oblongata

24
Q

CN9 exits the skull via

A

The jugular foramen

Travels posterior to the septum

25
Q

The superior ganglion for CN 9 is located

A

Inside the cranium

26
Q

The inferior ganglion of CN9 is located

A

Outside the cranial vault beyond the jugular foramen

27
Q

The tympanic nerve arises from the

A

Inferior ganglion

28
Q

The tympanic nerve carries preganglionic parasympathetic fibers as well as

A

Sensory fibers

29
Q

Tympanic nerve fibers are carried through the ________ into the tympanic cavity

A

Tympanic canaliculus

30
Q

The tympanic cavity recieves postganglionic sympathetic fibers from

A

Superior cervical ganglion which then forms the tympanic plexus

31
Q

The tympanic plexus carries ____________ info from the…..

A

Somatosensory

Pharyngotympanic tube, and mastoid air cells

32
Q

Once preganglionic parasympathetic fibers pass through the tympanic plexus the reform as

A

The lesser petrosal nerve

33
Q

The lesser petrosal nerve travels through __________ to the _____ ganglion

A

Lesser petrosal canal

Otic ganglion

34
Q

The carotid branch ascends from below and enters CN9 at the

A

Inferior ganglion

35
Q

The carotid branch of CN9 carries info from

A

Chemoreceptors and baroreceptors

36
Q

Chemoreceptors are located in the

A

Carotid body

37
Q

Baroreceptors are found in the

A

Carotid sinus

38
Q

Pharyngeal branches of CN9 convey ______ info from the….. may combine with some vagal branches to from the pharyngeal plexus

A

Sensory

Mucosa of the pharynx

39
Q

Tonsillar branches of CN9 convey sensory info from

A

Palatine tonsils and oral mucosa

40
Q

Lingual branches of CN9 general sensory and ______ info from the _________ posterior to the __________ _______________

A

Taste, tongue, sulcus terminalis

PNS (11 decks)

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