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

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 As such, some of the information contained herein may be outdated.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.

de:Musculus palatoglossus

hu:Musculus palatoglossus sr:Непчано-језични мишић

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Acknowledgement and Attribution Regarding Sources of Content

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 .

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