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Flashcards in CN X Part 1 Deck (50)
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1

What kind of info is carried by CN X?

motor, parasym and sensory (including taste)

2

Where does the vagus carry taste from?

epiglottal region

3

T/F: CN X is the largest CN.

False; it is the longest CN

4

T/F: The vagus is the most important sympathetic CN.

False; it is the most important parasym nerve

5

Where are the cell bodies of motor fibers carried in CN X?

nucleus ambiguus

6

What kind of motor fibers are carried by CN X

branchial motor fibers

7

Which hemisphere does the nucleus ambiguus receive info from?

both

8

Where are the preganglionic parasym fibers of CN X from?

posterior (dorsal) nucleus of the vagus

9

T/F: CN X receives info indirectly from the hypothalamus and the carotid sinus.

True

10

Where does incoming somatic sensory info of the Vagus nerve terminate?

in the spinal nucleus of CN V

11

Taste and viscerosensory info (mostly from the gut) terminates in which nucleus?

nucleus of the solitary tract (or nucleus solitarius)

12

What are the two peripheral ganglia associated with CN X?

superior and inferior ganglia

13

T/F: The superior and inferior ganglia of the vagus nerve are shared by CN IX.

False; these are different ganglia

14

What is another name for the superior ganglion of CN X?

jugular ganglion

15

What is another name for the inferior ganglion of CN X?

nodose ganglion

16

Where are the cell bodies of the neurons which carry somatic sensory info associated with CN X/

superior ganglion

17

Somatic Sensory info is carried by the Vagus nerve from the dura (infratentorial/posterior fossa), auricle, external auditory canal, lateral tympanic membrane and what other area(s)?

mucosa of the oropharynx and laryngopharynx

18

Where is somatic sensory info carried to by CN X?

spinal nucleus of CN V

19

Where is taste info (from epiglottis) carried to by CN X?

superior part of the nucleus for the solitary tract

20

Where are the neurons that carry taste info from the epiglottis?

inferior ganglion

21

Where is visceral sensory info carried to?

inferior part of the nucleus for the solitary tract

22

Where are the neurons that carry visceral sensory info?

inferior ganglion (just like taste from epiglottis)

23

What kind of info does the Vagus nerve carry from the larynx and laryngopharynx?

visceral sensory

24

What kind of info does the Vagus nerve carry from the viscera in the thoracic and abdominal cavities?

visceral sensory

25

What kind of info does the Vagus nerve carry from the pressure receptors in the aortic arch?

visceral sensory

26

What kind of receptors are in the para-aortic body which the Vagus carries visceral sensory info from?

chemoreceptors

27

What is the apparent origin of the Vagus nerve?

a series of rootlets from the lateral aspect of the MO

28

How many branches are given off of the trunk formed by CN X before it exits the skull?

one

29

Where does the Vagus nerve exit the skull?

jugular foramen

30

What branch is given off of the Vagus nerve before it exits the skull?

meningeal branch