CN IX: Glossopharyngeal Nerve

Question 1

What types of axons come from CN IX?

Answer 1

Special somatic afferent: nucleus of solitary tract; taste

General visceral afferent: nucleus of solitary tract; carotid body and sinus

General somatic afferent: spinal trigeminal nucleus; diverse

General visceral efferent: inferior salivatory nucleus; parotid gland

Special visceral efferent: nucleus ambiguus; pharynx

Question 2

Where can the majority of CN IX nuclei be found?

Answer 2

Rostral medulla

Question 3

Which nucleus controls the parotid gland?

Answer 3

Inferior salivitory nucleus

Otic Ganglion

Question 4

Which nucleus has brachial motor nerves that control the pharynx?

Answer 4

Nucleus ambiguus

Question 5

Which nucleus senses taste of post tongue and carotid body (oxygen) and sinus (BP)?

Answer 5

Nucleus of solitary tract

Question 6

Which nucleus senses several general somatics including pharynx, middle ear, outer ear?

Answer 6

Spinal trigeminal nucleus

Question 7

What ganglion and nucleus do the somatic afferent nerves of ear and middle ear go through?

Answer 7

Superior ganglion of IX

Trigeminal spinal nucleus

Question 8

What is glossopharyngeal neuralgia?

Answer 8

Results in sudden burst of pain in posterior tongue that radiates to ear