Glossopharyngeal Nerve (IX)

Question 1

the glossopharyngeal nerve carries which type of fibers?

Answer 1

motor, sensory, and autonomic fibers (mixed nerve)

Question 2

sensory information from

Answer 2

pharynx, including taste information from the posterior tongue

Question 3

parasympathetic leading to

Answer 3

parotid and other glands

Question 4

nuclei of origin for motor fibers?

Answer 4

superior part of nucleus ambiguus

Question 5

nuclei of origin for preganglionic parasympathetic fibers?

Answer 5

inferior salivary nucleus

Question 6

afferent, sensory fibers terminate in the..

Answer 6

solitary nucleus

Question 7

autonomic fibers synapse in what ganglion?

Answer 7

otic ganglion

Question 8

general sensory information is carried in glossopharyngeal nerve branches from which locations?

Answer 8

nasopharynx, oropharynx and portion of the tongue posterior to the sulcus terminalis, uvula, palatine tonsils, and tympanic cavity

Question 9

general sensory neurons have cell bodies located in which ganglion?

Answer 9

inferior ganglion

Question 10

from the inferior ganglion, information is conveyed to the…

Answer 10

CNS

Question 11

sensory pathway: after information is conveyed to the CNS, these fibers synapse in the…

Answer 11

spinal nucleus of the trigeminal nerve

Question 12

taste information from the tongue posterior to the sulcus terminalis is carried by neurons from which ganglion?

Answer 12

inferior ganglion

Question 13

axons from these cells (taste information from tongue posterior to the sulcus terminalis) synapse where?

Answer 13

superior part of the solitary nucleus

Question 14

some incoming fibers from the inferior ganglion synapse in the….

Answer 14

lower part of the solitary nucleus

Question 15

these cells (that synpase in the lower part of the solitary nucleus) carry which type of information and from where?

Answer 15

visceral afferent information from the carotid sinus and carotid body

Question 16

motor pathway: nucleus ambiguus contributes which type of neurons to cranial nerves (IX, X, XI)?

Answer 16

lower motor neurons

Question 17

axons from lower motor neurons carried in C.N. IX will innervate which muscle?

Answer 17

stylopharyngeus

Question 18

which nucleus gives rise to preganglionic parasympathetic axons carried in the glossopharyngeal nerve?

Answer 18

inferior salivary nucleus

Question 19

preganglionic parasympathetic axons will synapse in what ganglion?

Answer 19

otic ganglion

Question 20

postganglionic fibers arise from which ganglion?

Answer 20

otic ganglion

Question 21

postganglionic fibers supply…

Answer 21

parotid glands, buccal glands and inferior labial glands

Question 22

apparent origin for glossopharyngeal nerve

Answer 22

superior aspect of medulla oblongata

Question 23

C.N. IX exits the skull via

Answer 23

jugular foramen

Question 24

where is the superior ganglion located?

Answer 24

inside the cranium

Question 25

where is the inferior ganglion located?

Answer 25

beyond jugular foramen, outside the cranium