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PNS exam 2 > CN X > Flashcards

CN X Flashcards

0
Q

What cerebral hemisphere does nucleus ambiguous receive info from

A

both cerebral hemispheres

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1
Q

Where are cell bodies of motor fibers carried in vagus located

A

nucleus ambiguous

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2
Q

Where do pregang parasympathetic fibers arise from

A

posterior (dorsal) nucleus of the vagus

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3
Q

Where do preganglionic parasympathetic receive info from

A

indirectly receive info from hypothalamus and carotid sinus

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4
Q

Somatic sensory info terminates where

A

spinal nucleus of CN V

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5
Q

Taste and viserosensory terminate where

A

nucleus soliatius

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6
Q

What ganglia associated with CN X

A

superior and inferior ganglion

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7
Q

Superior Ganglion aka

A

Jugular ganglion

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8
Q

Inferior ganglion aka

A

Nodose ganglion

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9
Q

General sensory (somatic sensory) cell bodies in the superior gangion terminate in

A

spinal nucleus of CN V

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10
Q

Taste from epiglottis cell bodies in inferior ganglion travel to

A

superior part of nucleus solitarius

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11
Q

Visceral sensory cell bodies in inferior ganglion travel to

A

inferior part of nucleus solitarius

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12
Q

Where does the vagus nerve originate

A

lateral aspect of MO

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13
Q

Where does vagus nerve exit the skull

A

jugular foramen

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14
Q

What branches off before vagus nerve exits skull

A

meningeal branch

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15
Q

what does the meningeal branch supply

A

dura of posterior cranial fossa

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16
Q

How is the jugular foramen organized

A

split in 1/2 by fibrous septum

(X) Vagus and (XI) accessory nerve lie anterior to septum
(IX) glossophargeal lies posterior to septum

17
Q

Where are the inferior and superior ganglion located

A

superior just inside jugular foramen

inferior just inferior to jugular foramen

18
Q

Where is the auricular branch given off

A

at superior ganglion

19
Q

What is the path of the auricular branch

A

through mastoid canaliculus and tympanomastoid fissure to external acoustic meatus

20
Q

What info does auricular branch carry

A

sensory info from meatus and small portion of auricle

21
Q

After exiting the jugular foramen, vagus nerve runs with what

A

internal jugular vein and internal carotid artery in carotid sheath

22
Q

Runs with what, inferior to carotid bifurcation?

A

common carotid and internal jugular vein

23
Q

What 2 branches are given off at inferior ganglion

A

pharyngeal branches and branches to carotid

24
Q

what is pharyngeal plexus

A

pharyngeal branch, sympathetic fibers from sympathetic trunk, and fibers from CN IX

25
Q

What does pharyngeal branch supply

A

motor to pharyngeal constrictors and levator veli palatine muscles

26
Q

What do branches to carotid carry

A

viscerosensory about chemoreceptors in carotid body

27
Q

Where will the superior laryngeal nerve branch off

A

just inferior to inferior ganglion

28
Q

Superior laryngeal splits into what

A

external and internal laryngeal

29
Q

External laryngeal supply

A

motor supply to cricothyroid

30
Q

Internal laryngeal supply

A

Sensory to laryngeal mucosa superior to vocal cords

31
Q

What does the recurrent laryngeal supply

A

motor to all muscles of larynx minus cricothyroid

sensory to larynx inferior to vocal cords

32
Q

Path of left recurrent laryngeal

A

passes infront and under aortic arch

33
Q

Right recurrent laryngeal

A

passes posterior under subclavian artery before ascending

34
Q

What do superior and inferior cervical cardiac branches carry

A

parasympathetic info to cardiac plexus

35
Q

Where do superior cervical cardiac branches come from

A

leave vagus nerve and travel with great vessels to cardiac plexus

36
Q

Where do inferior cervical cardiac branches come from

A

given off by recurrent laryngeal and travel to cardiac plexus

37
Q

One branch (superior or inferior) carries viscerosensory info, concerning what

A

pressure on wall of aorta

nerve stimulated when aortic pressure is too high

38
Q

what does the vagus do in the thorax

A

passes posterior to root of ipsilateral lung

39
Q

route of right vagus after thorax

A

becomes posterior vagal trunk

40
Q

Route of left vagus after thorax

A

becomes anterior vagal trunk

PNS exam 2 (7 decks)

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