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PNS. > Vagus > Flashcards

Vagus Flashcards

(61 cards)

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1
Q

X carries ___ fibers

A

motor, parasymp, and sensory (including taste)

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2
Q

What is a major characteristic about X

A

longest cn

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3
Q

X is the most important __________ n.

A

parasymp

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4
Q

Cell bodies for motor nerves are located where

A

Nucleus Ambiguus

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5
Q

Nucleus Ambiguus receives sensory info from which hemisphere

A

both

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6
Q

Where do preganglionic paras fibers arise

A

Posterior nucleus of vagus

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7
Q

Where do pre para fibers indirectly receive info from

A

hypothalamus and carotid sinus

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8
Q

What tract do taste and visceroscensory info terminate

A

nucleus of solitary tract

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9
Q

What ganglia are associated with vagus

A

Superior and inferior ganglia

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10
Q

Superior ganglion aka

A

jugular ganglion

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11
Q

inferior ganglion aka

A

nodoes ganglion

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12
Q

Somatic sensory info cell bodies located for X

A

superior ganglion

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13
Q

What is X responsible for somatosensory

A

dura, auricle, external auditory canal, lateral tympanic membrane and muscosa of oropharynx and laryngopharynx

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14
Q

Where does somatosensory info from X terminate

A

spinal nucleus of trigeminal

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15
Q

Taste from cn X is carried to_________

A

superior part of nucleus solitary tract

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16
Q

where are the neurons for taste in cn X located?

A

inferior ganglion

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17
Q

Where does X carry visceral sensory info from?

A

larynx and laryngopharynx, viscera in hte thoracic and abdominal cavities, pressure receptors in the aortic arch and chemoreceptors in the para-aortic body

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18
Q

Apparent origin of X? as?

A

lateral aspect of MO as rootlets

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19
Q

Rootlets become trunk for X before X exits….

A

jugular foramen

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20
Q

What branch of X supplies dura of posterior cranial fossa

A

meningeal branch

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21
Q

what two nerves pass jugular foramen?

A

XI and X

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22
Q

where does X pass through jugular foramen

A

anterior to septum

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23
Q

What are X and XI surrounded by

A

meningeal sheath (arachnoid and dura)

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24
Q

Which ganglion is located in jugular foramen

A

superior

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25
Which ganglion is largern superior or inferior
inferior
26
Where is inferior ganglion located
just inferior to jugular formamen
27
What branch is given off at superior ganglion
auricular branch
28
explain course of auricular branch of X
- mastoid canaliculus - tympanomastoid fissure - external auditory meatus
29
What does auricular branch carry/supply
sensory, from meatus and small portion of auricle
30
Where does vagus sit above carotid bifurcation
BETWEEN internal carotid and internal jugular in carotid sheath
31
where does X sit below carotid bifurcation
internal jugular and common carotid
32
what are the branch of X in the neck
- pharyngeal - branches to the carotid - superior laryngeal - recurrent laryngeal - superior and inferior cervical cardiac branches
33
Where does pharyngeal branch of X leave X
@ level of inferior ganglion
34
What will combine with pharyngeal of X
IX and sympathetic fibers from sympathetic trunk
35
What do IX and Sympathetic fibers from sympathetic trunk form
pharyngeal plexus
36
What doespharyngeal of X supply motor to
pharyngeal constrictor and levator veli palatine (soft palate)
37
Which ganglion are branches to the carotid given off
inferior
38
What does the branches to the carotid carry? where relay info?
viscerosensory fibers that relay info from chemorecptors in carotid body to inf. part of nucleus for solitary tract
39
Branches of superior laryngeal n of X
internal and external laryngeal nerve
40
External Laryngeal of X supplies...
motor to cricothyroid
41
Internal laryngeal of X supplies
sensory from laryngeal mucosa to vocal folds
42
What two nerves are seperated by vocal folds for sensory innervation
- internal laryngeal of superior laryngeal of x | - recurrent laryngeal of x
43
Whta does recurrent laryngeal supply
- motor to all muscles of laynx except cricothryoid | - sensory info to larynx below vocal folds
44
Which n of X loops in from of aortic arch
left recurrent laryngeal
45
What does left recurrent laryngeal become
inferior laryngeal nerve
46
what does recurrent laryngeal of x supply
laryngeal musculature
47
what n of X passes post to subclavian arter
rt recurrent laryngeal
48
What kind of info do sup and inf cervical cardiac branches carry to cardiac plexus?
parasymp
49
How many para branch contribute to cardiac plexus? symp branches?
2, 3
50
Superior branches leave vagus and travel with __________ to cardiac plexus
great vessels
51
what branches are given off recurrent laryngeal and go to cardiac plexus
inferior branches
52
The branch that carries viscerosensory info concerning pressure will be stimulated if...
aortic pressure becomes too high
53
As X enters thorax it passes_______ to contribute to what plexus
posterior to root of ipsilat lung, pulmonary
54
Where do rt vs lt vagus pass esophogus ? plexus?
lt- ant rt- posterior esophogeal
55
RT or LT become posterior vagal trunk
rt
56
postior vagal trunk sends branches to? terminates? which goes to
post. stomach, large celiac branch -> duodenum, liver, kidnes, small intestine, and prox 2/3 large intestine
57
Vagal supply reaches duodenum, liver, kidnes, small intestine, and prox 2/3 large intestine through? (3 plexuses)
- celiac - superior mesenteric - renal
58
What nerve comes anterior vagal trunk?
left vagus
59
Where does left X become ant vagal trunk
before esophageal opening
60
where does rt X become post vagal trunk
after esophagel opening
61
Where does anterior vagal trunk send branches
stomach, liver, pancrea, and sup part of duodenum

PNS. (2 decks)

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