Glossopharyngeal nerve

Question 1

The glossopharyngeal nerve ahas 4 nuclei located in the medulla.
2 for motorfibers and 2 for sensory fibers. Which?

Answer 1

MOTOR:
* Nucleus Ambiguus
* Inferior Salivatory nucleus
SENSORY:
Sensory nuclei of the trigeminal nerve
* Nuclei of the solitary tract

Question 2

WHere does CN IX exit the skull?

Answer 2

Through the jugular foramen.

Question 3

The Glossopharyngeus nerve give of 6 branches. WHich?

Answer 3

• tympanic
• carotid
• pharyngeal
• muscular
• tonsillar
• lingual

Question 4

What parasympathic ganglion is CN IX associated to?

Answer 4

The otic ganglion

Question 5

What is the parasympathic CNIX nerve called and where does it exit the skull?

Answer 5

Its the lesser petrosal nerve and exit through the petrous part of the temporal bone. posteriorlateral to the jugular foramen.

Question 6

What gland is innervated by the lesser petrosal nerve?

Answer 6

The parotid gland.

Question 7

Which cranial nerve provides taste sensation for the posterior third of the tongue, as well as sensation to the tonsils, pharynx and middle ear, and motor fibers to the stylopharyngeus muscle?

Answer 7

The glossopharyngeal nerve

Question 8

What ganglia is associated with the glossopharyngeal nerve and provides postganglionic fibers for the parotid gland?

Answer 8

The otic ganglion

Question 9

Which plexus does the glossopharyngeal nerve provide for the middle ear, that is also responsible for the pain sensations upon otitis media?

Answer 9

The Tympanic plexus

Question 10

Which cranial nerve nucleus receives sensory fibers from the posterior one-third of the tongue, palatine tonsils, oropharynx, mucosa of the middle ear and mastoid cells via the glossopharyngeal nerve ?

Answer 10

The spinal nucleus of the trigeminal nerve

Question 11

Which cranial nerve nucleus receives taste (gustatory) fibers from the posterior one-third of the tongue carried by the glossopharyngeal nerve?

Answer 11

Nucleus of the Solitary tract

Question 12

Which of the following cranial nerve nuclei provides parasympathetic fibers to the glossopharyngeal nerve ?

Answer 12

The inferior salivatory nucleus

Question 13

The fibers of the glossopharyngeal nerve consist of efferent motor and parasympathetic fibers and afferent sensory fibers.
Which nucleus supplies the efferent motor fibers?

Answer 13

The nucleus Ambiguus