Palatoglossus muscle
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| Palatoglossus muscle | |
|---|---|
 | |
| Dissection of the muscles of the palate from behind. | |
| Latin | musculus palatoglossus |
| Gray's | subject #243 1139 |
| Origin | palatine aponeurosis |
| Insertion | tongue |
| Artery: | |
| Nerve: | vagus nerve and cranial accessory nerve |
| Action: | raising the back part of the tongue |
| Dorlands /Elsevier | m_22/12550045 |
The palatoglossus (glossopalatinus) is a small fleshy fasciculus, narrower in the middle than at either end, forming, with the mucous membrane covering its surface, the glossopalatine arch.
It arises from the anterior surface of the soft palate, where it is continuous with the muscle of the opposite side, and passing downward, forward, and lateralward in front of the palatine tonsil, is inserted into the side of the tongue, some of its fibers spreading over the dorsum, and others passing deeply into the substance of the organ to intermingle with the Transversus linguæ.
Action
Elevates posterior tongue, closes the oropharyngeal isthmus, and aids initiation of swallowing.
Innervation
The palatoglossus is the only muscle of the tongue that is not innervated by the hypoglossal nerve (CN XII). Rather, the palatoglossus is innervated by the vagus nerve (CN X) via the pharyngeal plexus.
External links
- LUC palg
- -1315307440 at GPnotebook
- Palatoglossus+muscle at eMedicine Dictionary
- Roche Lexicon - illustrated navigator, at Elsevier 05287.011-1
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
