exam 2 glossopharyngeal nerve

Question 1

the glossopharyngeal nerve is carries what type of information?

Answer 1

it is a mixed nerve that carries sensory, motor, and autonomic information

Question 2

the motor fibers of the glossopharyngeal nerve arise from where?

Answer 2

cell bodies located in the superior part of the nucleus ambiguus

Question 3

the preganglionic parasympathetic fibers of the glossopharyngeal arise from where?

Answer 3

inferior salivatory nucleus

Question 4

afferent, sensory fibers of the glossopharyngeal nerve terminate where?

Answer 4

solitary nucleus

Question 5

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

Answer 5

the superior ganglion

the inferior ganglion

Question 6

what is the correlation between the superior and inferior ganglia?

Answer 6

the superior ganglion is smaller and is thought to be a separated part of the inferior ganglion

Question 7

general sensory informatio is carried from the glossopharyngeal nerve from where?

Answer 7

Nasopharynx
Oropharynx
portion of tongue posterior to sulcus terminalis
uvula
palatine tonsils
tympanic cavity (by a branch)

Question 8

where are the cell bodies for the general sensory pathway located?

Answer 8

inferior ganglion

Question 9

as information from the inferior ganglion (general sensory) is conveyed to the CNS fibers will synapse where?

Answer 9

they will synapse in the spinal nucleus of the trigeminal nerve (pain and temp)

Question 10

what more specific sensory information is carried from the tongue (posterior to the sulcus terminalis) to theinferior ganglion?

Answer 10

taste information

Question 11

where do the taste information axons from the inferior ganglion extend to?

Answer 11

superior part of the solitary nucleus

Question 12

axons from the inferior ganglion to the lower part of the solitary nucleus convey what information?

Answer 12

they carry visceral afferent information from the carotid sinus and carotid body
Baroreceptor and Chemoreceptor

Question 13

the nucleus ambiguus contributes lower motor neurons to what three cranial nerves?

Answer 13

9, 10, 11

Question 14

axons from the lower motor neurons of the nucleus ambigiuus carried in the glossopharyngeal will innervate what muscle?

Answer 14

stylopharyngeus

Question 15

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

Answer 15

inferior salivatory nucleus

Question 16

what fibers synapse in the otic ganglion?

Answer 16

preganglionic parasympathetic fibers carried in the gossopharyngeal nerve originating from the inferior salivatory nucleus.
say it all!!

Question 17

what do the postganglionic fibers from the otic ganglion supply?

Answer 17

parotid glands
buccal glands
inferior labial glands

Question 18

what is the apparent origin of the glossopharyngeal nerve?

Answer 18

superior aspect of the medulla oblongata

Question 19

how does the glossopharyngeal nerve exit the skull?

Answer 19

jugular foramen

Question 20

where is the superior ganglion located? and the inferior ganglion?

Answer 20

the superior ganglion is located is located inside the cranium and the inferior is located beyond the jugular foramen outside the cranium

Question 21

where does the tympanic nerve originate from and what does it carry?

Answer 21

it arises from the inferior ganglion and it carries preganglionic parasympathetic fibers as well as sensory fibers.

Question 22

the fibers of the tympanic nerve pass through what, to reach the tympanic cavity?

Answer 22

tymapanic canaliculus

Question 23

what happens when the typmanic nerve enters the tymapanic cavity?

Answer 23

it receives postganglionic sympathetic fibers from the superior cervical ganglion and forms the tympanic plexus

Question 24

what is formed when the typanic nerve receives postganglionic sympathetic fibers from the superior cervical ganglion?

Answer 24

the tympanic plexus is formed

Question 25

what types of information does the typanic plexus carry and where from?

Answer 25

somatosensory information from the tympanic cavity, pharyngotympanic tube and the mastoid air cells

Question 26

the preganglionic parasympathetic fibers carried by the typmanic nerve pass through the tympanic plexus and reform to become what?

Answer 26

the lesser petrosal nerve

Question 27

where does the lesser petrosal nerve go after it is reformed from the preganglionic parasympathetic fibers of the tympanic nerve?

Answer 27

it passes through the lesser petrosal canal to the otic ganglion

Question 28

the postganglionic parasympathetic fibers from the the otic ganglion are carried in what nerve to supply what glands?

Answer 28

they are carried in branches of C.N 5 V3 (mandibular) to the parotid, buccal and inferior labial glands

Question 29

which visceral afferent branch ascends from below and enters the nerve at the inferior ganglion?

Answer 29

carotid branch

Question 30

what information is supplied by the carotid branch?

Answer 30

afferent of the chemoreceptors in the carotid body and baroreceptors in the carotid sinus

Question 31

what other nerve can carry information similar to the carotid branch?

Answer 31

the vagus nerve

Question 32

pharyngeal branches convey what information?

Answer 32

sensory information from the mucosa of the pharynx

Question 33

the pharyngeal branches will combine with vagal branches to form what?

Answer 33

the pharyngeal plexus

Question 34

the muscular branch of the glossopharyngeal leaves to supply what muscle?

Answer 34

stylopharyngeus | elevate larynx, pharynx, and dilate pharynx

Question 35

what information does the tonsilar branches carry?

Answer 35

sensory information from the palatine tonsils and oral mucosa

Question 36

what information does the lingual branches carry?

Answer 36

general sensory and taste information from the tongue (posterior to the sulcus terminals)

Question 37

clinical considerations?

Answer 37

difficulty swallowing loss of taste gag reflex

Question 38

the general sensory information of the lingual branch terminates where?

Answer 38

spinal nucleus of the trigeminal

Question 39

taste information of the lingual branch terminates where?

Answer 39

superior part of the solitary nucleus