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PNS > vagus nerve > Flashcards

vagus nerve Flashcards

0
Q

what is the longest nerve that carries parasympathetic information

A

vagus nerve

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1
Q

the vagus nerve carries what type of information

A

motor, parasympathetic and sensory information, including some taste information from the epiglottal region

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2
Q

the nucleus ambiguus recieves information from where and carries what type of fibers?

A

both cerebral hemispheres and motor fibers

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3
Q

preganglionic parasympathetic fibers comes from where?

A

posterior (dorsal) nucleus of the vagus

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4
Q

the vagus nerve receives information indirectly from where?

A

the hypothalamus and the carotid sinus

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5
Q

the spinal nucleus of the trigeminal nerve has what type of information synapse at it?

A

incoming somatic sensory

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6
Q

taste and viscerosensory information terminates where?

A

nucleus of the solitary tract

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7
Q

what are the two peripheral ganglia associated with the vagus nerve?

A

superior (jugular) and inferior (nodose) ganglia

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8
Q

what type of information has cell bodies located in the superior ganglion?

A

somatic sensory (pain) information

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9
Q

somatic sensory information is carried from where?

A

the dura (infratentorial / posterior fossa), auricle, external auditory canal, lateral tympanic membrane and mucosa of the oropharynx, laryngopharynx

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10
Q

taste from the epiglottis is carried to what?

A

superior part of the nucleus of the solitary tract by neurons in the inferior ganglion

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11
Q

what type of information is carried by the inferior part of the nucleus for the solitary tract?

A

visceral sensory

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12
Q

where does the visceral sensory information come from?

A

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

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13
Q

what is the origin of the vagus nerve?

A

lateral aspect of the medulla oblongata as a series of rootlets

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14
Q

what branch supplies infratentorial the dura of the posterior cranial fossa

A

meningeal branch

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15
Q

what compartmentalizes the jugular foramen

A

a fibrous septum

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16
Q

if the glossopharyngeal nerve travels posterior to the septum what travels anterior?

A

vagus and accessory nerve

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17
Q

what covers the vagus and the accessory nerve

A

meningeal sheath (arachnoid and dura)

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18
Q

where is the superior ganglion located

A

in the jugular foramen

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19
Q

where is the inferior ganglion located

A

inferior to the jugular foramen

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20
Q

when is the auricular branch given off

A

at the superior ganglion

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21
Q

what is the path of the auricular branch

A

through the mastoid canaliculus and the tympanomastoid fissure to the external auditory meatus

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22
Q

the auricular branch carries information from where

A

the meatus and a small portion of the auricle

23
Q

after existing the jugular foramen where does the vagus nerve go?

A

it travels inferiorly within the carotid sheath, between the internal carotid artery and the internal jugular vein down to the carotid bifurcation

24
Q

when is the pharyngeal branch given off?

A

at the inferior ganglion

25
Q

what all forms the pharyngeal plexus

A

pharyngeal branch, glossopharyngeal nerve, sympathetic fibers from the sympathetic trunk

26
Q

what will supply the motor information to the pharyngeal constrictor muscles and the levator veli palatine

A

vagal fibers

27
Q

viscerosensory fiber of the carotid branches are given off where

A

inferior ganglion

28
Q

viscerosensory fibers that carry information from the chemoreceptors in the carotid body to where

A

inferior part of the nucleus for the solitary tract

29
Q

the superior laryngeal nerve is given off where

A

just inferior to the inferior ganglion

30
Q

the superior laryngeal nerve will divide into what

A

the internal and external laryngeal nerve (area above the vocal fold)

31
Q

the cricothyroid muscle is supplied by what

A

the external laryngeal nerve

32
Q

sensory information from the laryngeal mucosa as far inferior as the vocal folds comes from where

A

internal laryngeal nerve

33
Q

where does the sensory information from the laryngeal mucosa terminate

A

solitary nucleus

34
Q

what muscle does not gets its motor fibers from the recurrent laryngeal nerve

A

cricothyroid

35
Q

the recurrent laryngeal nerve carries sensory information from where

A

the larynx inferior to the vocal folds

36
Q

on which side does the recurrent laryngeal nerve come off the vagus after the vagus passes in front of the aortic arch

A

left side

37
Q

once the recurrent laryngeal nerve of the left side passes under the aortic arch and ascends what does it become and what does it supply?

A

becomes the inferior laryngeal nerve and supplies the laryngeal musculature

38
Q

the right side of the recurrent laryngeal nerve passes where?

A

posteriorly to the subclavian artery

39
Q

parasympathetic information from the cardiac plexus is carried by what

A

the superior and inferior cervical branches

40
Q

the superior branch leave the vagus nerve when

A

at the cardiac plexus to travel with the great vessels(aorta, pulmonary vessels, superior vena cava)

41
Q

the inferior cervical branch comes off what

A

recurrent laryngeal nerve

42
Q

the superior branch will carry what type of information

A

viscerosensory information concerning pressure on the wall of the aorta

43
Q

once the vagus nerve enters the thorax where does it go?

A

it will pass posteriorly to the root of the ipsilateral lung and contribute to the pulmonary plexus

44
Q

the esophageal plexus has which branch contributing to it

A

the left vagus nerve which moves anteriorly

45
Q

the right vagus nerve enters the abdominal cavity through what?

A

the esophageal opening and becomes the vagal trunk

46
Q

the vagal trunk sends branches to where

A

posterior stomach and terminates in the large celiac branch

47
Q

the large celiac branch sends branches where

A

duodenum, liver, kidneys, small intestine, and proximal 2/3 of the large intestine

48
Q

what does the vagal nerve use to supply all the organs in the abdominal cavity

A

celiac, superior mesenteric and renal plexuses

49
Q

the left vagus nerve becomes the anterior vagal trunk after entering the abdominal cavity through the esophageal opening, what organs does it inervate?

A

stomach, liver, pancreas, superior part of the doudenum

50
Q

branches of the vagus that are distributed via the plexuses carry what

A

preganglionic parasympathetic and sensory

51
Q

the anterior branch of the pulmonary plexus receives sympathetic fibers from where

A

cervical sympathetic ganglia (stallae)

52
Q

the posterior branch of the pulmonary trunk receives its sympathetic fibers from where

A

thoracic ganglia (2-5,6) (sympathetic chain)

53
Q

the stallae ganglion is the fusion of what

A

the lowest cervical and upper most thoracic

54
Q

where are postganlionic cell bodies found?

A

ganglion in the abdominal cavity and the wall of the target organ

PNS (6 decks)

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