Glossopharyngeal nerve

Jump to: navigation, search
Nerve: Glossopharyngeal nerve
Gray791.png
Plan of upper portions of glossopharyngeal, vagus, and accessory nerves.
Gray793.png
Course and distribution of the glossopharyngeal, vagus, and accessory nerves. (Label for glossopharyngeal is at upper right.)
Latin nervus glossopharyngeus
Gray's subject #204 906
Innervates    stylopharyngeus
To tympanic nerve
MeSH Glossopharyngeal+Nerve
Dorlands
/ Elsevier
    
n_05/12565844

WikiDoc Resources for Glossopharyngeal nerve

Articles

Most recent articles on Glossopharyngeal nerve

Most cited articles on Glossopharyngeal nerve

Review articles on Glossopharyngeal nerve

Articles on Glossopharyngeal nerve in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Glossopharyngeal nerve

Images of Glossopharyngeal nerve

Photos of Glossopharyngeal nerve

Podcasts & MP3s on Glossopharyngeal nerve

Videos on Glossopharyngeal nerve

Evidence Based Medicine

Cochrane Collaboration on Glossopharyngeal nerve

Bandolier on Glossopharyngeal nerve

TRIP on Glossopharyngeal nerve

Clinical Trials

Ongoing Trials on Glossopharyngeal nerve at Clinical Trials.gov

Trial results on Glossopharyngeal nerve

Clinical Trials on Glossopharyngeal nerve at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Glossopharyngeal nerve

NICE Guidance on Glossopharyngeal nerve

NHS PRODIGY Guidance

FDA on Glossopharyngeal nerve

CDC on Glossopharyngeal nerve

Books

Books on Glossopharyngeal nerve

News

Glossopharyngeal nerve in the news

Be alerted to news on Glossopharyngeal nerve

News trends on Glossopharyngeal nerve

Commentary

Blogs on Glossopharyngeal nerve

Definitions

Definitions of Glossopharyngeal nerve

Patient Resources / Community

Patient resources on Glossopharyngeal nerve

Discussion groups on Glossopharyngeal nerve

Patient Handouts on Glossopharyngeal nerve

Directions to Hospitals Treating Glossopharyngeal nerve

Risk calculators and risk factors for Glossopharyngeal nerve

Healthcare Provider Resources

Symptoms of Glossopharyngeal nerve

Causes & Risk Factors for Glossopharyngeal nerve

Diagnostic studies for Glossopharyngeal nerve

Treatment of Glossopharyngeal nerve

Continuing Medical Education (CME)

CME Programs on Glossopharyngeal nerve

International

Glossopharyngeal nerve en Espanol

Glossopharyngeal nerve en Francais

Business

Glossopharyngeal nerve in the Marketplace

Patents on Glossopharyngeal nerve

Experimental / Informatics

List of terms related to Glossopharyngeal nerve

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


The glossopharyngeal nerve is the ninth of twelve pairs of cranial nerves. It exits the brainstem out from the sides of the upper medulla, just rostral (closer to the nose) to the vagus nerve.

Functions

There are a number of functions of the glossopharyngeal nerve:

Brainstem connections

The glossopharyngeal nerve, being mostly sensory, does not have a cranial nerve nucleus of its own. Instead it must project into many different structures in the brainstem:

Path

From the medulla oblongata, the glossopharyngeal nerve passes laterally across the flocculus, and leaves the skull through the central part of the jugular foramen, in a separate sheath of the dura mater, lateral to and in front of the vagus and accessory nerves. Within the jugular foramen, the glossopharyngeal nerve forms the superior ganglion (the glossopharyngeal neve is also associated with an inferior ganglion).

In its passage through the jugular foramen, it grooves the lower border of the petrous part of the temporal bone; and, at its exit from the skull, passes forward between the internal jugular vein and internal carotid artery. It descends in front of the latter vessel, and beneath the styloid process and the muscles connected with it, to the lower border of the stylopharyngeus. It then curves forward, forming an arch on the side of the neck and lying upon the stylopharyngeus and middle pharyngeal constrictor muscle. From there it passes under cover of the hyoglossus muscle, and is finally distributed to the palatine tonsil, the mucous membrane of the fauces and base of the tongue, and the mucous glands of the mouth.


Branches

1. Tympanic
2. Stylopharyngeal
3. Tonsillar
4. Nerve to carotid sinus
5. Branches to the posterior third of tongue
6. Lingual branches
7. A communicating branch to the Vagus nerve

Note: The glossopharyneal nerve contributes in the formation of the pharyngeal plexus along with the vagus nerve.

Testing the glossopharyngeal nerve

The gag reflex is absent in patients with damage to the glossopharyngeal nerve as it is responsible for the afferent limb of the reflex.

Additional images

External links



de:Nervus glossopharyngeus lt:Liežuvinis ryklės nervas nl:Nervus glossopharyngeus no:Nervus glossopharyngeus


Linked-in.jpg