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Flashcards in Vagus Deck (61)
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1

X carries ___ fibers

motor, parasymp, and sensory (including taste)

2

What is a major characteristic about X

longest cn

3

X is the most important __________ n.

parasymp

4

Cell bodies for motor nerves are located where

Nucleus Ambiguus

5

Nucleus Ambiguus receives sensory info from which hemisphere

both

6

Where do preganglionic paras fibers arise

Posterior nucleus of vagus

7

Where do pre para fibers indirectly receive info from

hypothalamus and carotid sinus

8

What tract do taste and visceroscensory info terminate

nucleus of solitary tract

9

What ganglia are associated with vagus

Superior and inferior ganglia

10

Superior ganglion aka

jugular ganglion

11

inferior ganglion aka

nodoes ganglion

12

Somatic sensory info cell bodies located for X

superior ganglion

13

What is X responsible for somatosensory

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

14

Where does somatosensory info from X terminate

spinal nucleus of trigeminal

15

Taste from cn X is carried to_________

superior part of nucleus solitary tract

16

where are the neurons for taste in cn X located?

inferior ganglion

17

Where does X carry visceral sensory info from?

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

18

Apparent origin of X? as?

lateral aspect of MO as rootlets

19

Rootlets become trunk for X before X exits....

jugular foramen

20

What branch of X supplies dura of posterior cranial fossa

meningeal branch

21

what two nerves pass jugular foramen?

XI and X

22

where does X pass through jugular foramen

anterior to septum

23

What are X and XI surrounded by

meningeal sheath (arachnoid and dura)

24

Which ganglion is located in jugular foramen

superior

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