Exam 2 CN IX

Question 1

What type of fibers does the glossopharyngeal nerve carry?

Answer 1

Motor, sensory, autonomic; therefore it is mixed!

Question 2

Where does the glossopharyngeal carry motor information to

Answer 2

The stylopharyngeus

Question 3

Where does the glossopharyngeal carry sensory information from

Answer 3

From the pharynx

Question 4

Where does the glossopharyngeal carry taste information from

Answer 4

The posterior tongue

Question 5

Where does the glossopharyngeal carry parasympathetic information to

Answer 5

Leading ultimately to the parotid and other glands

Question 6

Where do the cell bodies for motor fibers carried in the glossopharyngeal arise from

Answer 6

They are located in the superior part of the nucleus ambiguus

Question 7

Where do preganglionic parasympathetic fibers arise from in the glossopharyngeal nerve

Answer 7

The inferior salivary nucleus

Question 8

Where are afferent sensory fibers terminated with the glossopharyngeal

Answer 8

In the solitary nucleus

Question 9

What are the two ganglia associated with the glossopharyngeal

Answer 9

Superior and inferior ganglia

Question 10

Which peripheral ganglion is smaller and usually thought as a separate part

Answer 10

The superior ganglion

Question 11

General sensory information carried in glossopharyngeal is from where

Answer 11

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

Question 12

General sensation from what cavity is also carried in a branch of the glossopharyngeal

Answer 12

Tympanic cavity

Question 13

Where are the cell bodies located for general sensory info of the glossopharyngeal

Answer 13

The inferior ganglion where information is then conveyed to the CNS and fibers synapse in the spinal nucleus of trigeminal nerve

Question 14

Taste information from the tongue posterior to the sulcus terminalis is carried by neurons from where?

Answer 14

The inferior ganglion

Question 15

Where is taste information carried from in the glossopharyngeal

Answer 15

Tongue posterior to the sulcus terminalis

Question 16

Axons carrying taste information have cells that synapse where

Answer 16

Superior portion of the solitary nucleus

Question 17

Cells carrying visceral afferent information in the glossopharyngeal from where

Answer 17

Carotid sinus and carotid body

Question 18

Incoming visceral afferent information from the inferior ganglion synapse where?

Answer 18

Lower part of solitary nucleus

Question 19

What does the nucleus ambiguus contribute to three cranial nerves and what are those cranial nerves

Answer 19

Lower motor neurons to CN IX, X, XI

Question 20

Axons from the lower motor neurons from nucleus ambiguus that are carried in glossopharyngeal will innervate what muscle

Answer 20

Stylopharyngeus

Question 21

What gives rise to preganglionic parasympathetic axons carried in the glossopharyngeal

Answer 21

The inferior salivary nucleus

Question 22

Where do preganglionic parasympathetic fibers in the glossopharyngeal nerve synaps

Answer 22

The otic ganglion

Question 23

Postganglionic fibers after synapsing in the otic ganglion supply what?

Answer 23

Parotid glands, buccal glands, and inferior labial glands

Question 24

What is the A.O. Of the glossopharyngeal nerve

Answer 24

Lateral aspect of the superior aspect of the MO

Question 25

Where does the glossopharyngeal exit the skull

Answer 25

Via the jugular foramen

Question 26

Where is the superior ganglion for the glossopharyngeal nerve located

Answer 26

Inside the cranium

Question 27

Where is the inferior ganglion for the glossopharyngeal nerve located

Answer 27

Beyond the jugular foramen outside the cranium

Question 28

What is another name for the inferior ganglion of the glossopharyngeal nerve

Answer 28

The petrosal ganglion

Question 29

Where does the tympanic nerve arise from?

Answer 29

The inferior ganglion

Question 30

What does the tympanic branch carry

Answer 30

Preganglionic parasympathetic fibers and sensory

Question 31

What is the course of the tympanic branch of the glossopharyngeal nerve

Answer 31

Through the tympanic canaliculus into the tympanic cavity, in the cavity this is where it receives postganglionic sympathetic fibers

Question 32

Where does the tympanic branch of glossopharyngeal nerve recieve postganglionic sympathetic fibers from and what will it then form

Answer 32

Superior cervical ganglion forming the tympanic plexus

Question 33

What does the tympanic plexus carry

Answer 33

Somatosensory info from tympanic cavity, pharyngotympanic tube, and mastoid air cells

Question 34

After pregang para fiber pass through the tympanic plexus what do they reform as

Answer 34

The lesser petrosal nerve that travels through the lesser petrosal canal to otic ganglion

Question 35

Post gang para fibers from otic ganglion are carried in what to parotid, buccal, and inferior labial glands

Answer 35

CN V3

Question 36

Where does the carotid branch enter and what is it carrying

Answer 36

The inferior ganglion carrying afferent info from chemoreceptors in carotid body and baroreceptors in carotid sinus

Question 37

What info being carried in the glossopharyngeal nerve is similar to the vagus

Answer 37

The carotid branch from inferior ganglion carrying afferent info from chemoreceptors in carotid body and baroreceptors in carotid sinus

Question 38

Pharyngeal branches convey sensory information from the mucosa of what?

Answer 38

Mucosa of the pharynx

Question 39

Pharyngeal branches will combine with vagal branches to form what?

Answer 39

Pharyngeal plexus near middle pharyngeal plexus

Question 40

The muscular branch leaves glossopharyngeal nerve to supply what

Answer 40

Stylopharyngeus

Question 41

The remaining branches of glossopharygeal nerve reach what

Answer 41

Oral cavity

Question 42

The tonsillar branches convey sensory info from where

Answer 42

Palatine tonsils and oral mucosa

Question 43

Lingual branches carry what from where

Answer 43

General sensory and taste info from tongue posterior to sulcus terminalis