Exam 2- CN 9

Question 1

Glossopharyngeal carries what kind of fibers

Answer 1

Motor, sensory, and autonomic fibers

Question 2

Glossohpharyngeal is a __________ cranial nerve

Answer 2

Mixed

Question 3

CN9 gives motor innervation to

Answer 3

Stylopharyngeus

Question 4

CN 9 gives sensory info from

Answer 4

The pharynx, including taste info from the posterior tongue

Question 5

CN 9 gives parasympathetic info leading to the

Answer 5

Parotid and other glands

Question 6

Motor fibers for CN9 arise from cell bodies located in

Answer 6

Superior part of nucleus ambiguus

Aka brachiomotor vs. somatomotor

Question 7

Preganglionic parasympathetic fibers for CN 9 arise

Answer 7

From the inferior salivary nucleus

Question 8

Afferent CN9 sensory fibers terminate in

Answer 8

Solitary nucleus

Question 9

How many peripheral ganglia are associated with CN9

Answer 9

2

Question 10

What are the peripheral ganglia associated with CN9

Answer 10

Superior ganglion-smaller

Inferior ganglion

Question 11

Autonomic fibers for CN9 synapse in

Answer 11

The otic ganglion

Question 12

General sensory info carried in CN9 is from

Answer 12

Nasopharynx, oropharynx, and portion of the tongue posterior to the sulcus terminal is, uvula, and palatine tonsils

Question 13

General sensation from the________________ is also carried in CN9

Answer 13

Tympanic cavity

Question 14

Tympanic cavity sensation is carried by CN9 and cell bodies are located in the ______________

Answer 14

Inferior ganglion.

Then info is conveyed to the CNS and synapse in the Spinal nucleus of trigeminal nerve

Question 15

Taste info from posterior to the sulcus terminal is is carried by neuron from the _____________.

Answer 15

Inferior ganglion

Axons from these cells synapse in the Superior part of the solitary nucleus.

Question 16

Incoming fibers from the inferior ganglion do synapse in the lower part of the solitary nucleus. They carry _______________ info from the ________ and _________.

Answer 16

Visceral afferent

Carotid sinus and carotid body

Question 17

which part of the solitary nucleus is visceral afferent info from the carotid sinus and body synapse in

Answer 17

Lower part of solitary nucleus

Question 18

Nucleus ambiguus contributes LMN to what three CN

Answer 18

CN 9,10,11

Question 19

What kind of motor neurons innervated stylopharyngeus

Answer 19

LMN

Question 20

The inferior salivary nucleus gives rise to

Answer 20

Preganglionic parasympathetic axons

Question 21

The inferior salivary nucleus preganglionic parasympathetic fibers will synapse in

Answer 21

The otic ganglion

Question 22

After preganglionic parasympathetic fibers synapse in the otic ganglion they carry __________ fibers that supply the _______

Answer 22

Postganglionic

Parotid glands, buccal glands, and inferior labial glands

Question 23

What is the apparent origin of CN9

Answer 23

Lateral aspect, superior part of the medulla oblongata

Question 24

CN9 exits the skull via

Answer 24

The jugular foramen

Travels posterior to the septum

Question 25

The superior ganglion for CN 9 is located

Answer 25

Inside the cranium

Question 26

The inferior ganglion of CN9 is located

Answer 26

Outside the cranial vault beyond the jugular foramen

Question 27

The tympanic nerve arises from the

Answer 27

Inferior ganglion

Question 28

The tympanic nerve carries preganglionic parasympathetic fibers as well as

Answer 28

Sensory fibers

Question 29

Tympanic nerve fibers are carried through the ________ into the tympanic cavity

Answer 29

Tympanic canaliculus

Question 30

The tympanic cavity recieves postganglionic sympathetic fibers from

Answer 30

Superior cervical ganglion which then forms the tympanic plexus

Question 31

The tympanic plexus carries ____________ info from the.....

Answer 31

Somatosensory Pharyngotympanic tube, and mastoid air cells

Question 32

Once preganglionic parasympathetic fibers pass through the tympanic plexus the reform as

Answer 32

The lesser petrosal nerve

Question 33

The lesser petrosal nerve travels through __________ to the _____ ganglion

Answer 33

Lesser petrosal canal Otic ganglion

Question 34

The carotid branch ascends from below and enters CN9 at the

Answer 34

Inferior ganglion

Question 35

The carotid branch of CN9 carries info from

Answer 35

Chemoreceptors and baroreceptors

Question 36

Chemoreceptors are located in the

Answer 36

Carotid body

Question 37

Baroreceptors are found in the

Answer 37

Carotid sinus

Question 38

Pharyngeal branches of CN9 convey ______ info from the..... may combine with some vagal branches to from the pharyngeal plexus

Answer 38

Sensory Mucosa of the pharynx

Question 39

Tonsillar branches of CN9 convey sensory info from

Answer 39

Palatine tonsils and oral mucosa

Question 40

Lingual branches of CN9 general sensory and ______ info from the _________ posterior to the __________ _______________

Answer 40

Taste, tongue, sulcus terminalis