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The Styloglossus, the shortest and smallest of the three styloid muscles, arises from the anterior and lateral surfaces of the styloid process near its apex, and from the stylomandibular ligament.

Passing downward and forward between the internal and external carotid arteries, it divides upon the side of the tongue near its dorsal surface, blending with the fibers of the Longitudinalis inferior in front of the Hyoglossus; the other, oblique, overlaps the Hyoglossus and decussates with its fibers.

Innervation

The styloglossus is innervated by the Hypoglossal nerve (CN XII) like all muscles of the tongue except palatoglossus which is innervated by the Pharyngeal plexus of vagus nerve (CN X).

Action

The styloglossus draws up the sides of the tongue to create a trough for swallowing. As a pair they also aid in retracting the tongue.

Additional images

Left temporal bone. Outer surface.
Muscles of the neck. Anterior view.
The internal carotid and vertebral arteries. Right side.
Course and distribution of the glossopharyngeal, vagus, and accessory nerves.
Hypoglossal nerve, cervical plexus, and their branches.
Styloglossus muscle
Styloglossus muscle
Styloglossus muscle
Styloglossus muscle

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

503709774 at GPnotebook
Anatomy diagram: 25420.000-1 at Roche Lexicon - illustrated navigator, Elsevier

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English Journal

Surgical anatomy of the styloid muscles and the extracranial glossopharyngeal nerve.

Prades JM, Gavid M, Asanau A, Timoshenko AP, Richard C, Martin CH.SourceLaboratoire d'Anatomie, Faculté de Médecine J. Lisfranc, University of Saint-Étienne, Saint-Étienne, France, jean.michel.prades@univ-st-etienne.fr.
Surgical and radiologic anatomy : SRA.Surg Radiol Anat.2013 Jul 9. [Epub ahead of print]
PURPOSE: The purpose of the study was to determine the relationships between the extracranial glossopharyngeal (IX) nerve and the muscles of the styloid diaphragm. In humans, the IX nerve is a hidden retrostyloid nerve which plays a critical role notably in swallowing and has to be preserved during
PMID 23835628

Suprahyoid neck fascial configuration, especially in the posterior compartment of the parapharyngeal space: a histological study using late-stage human fetuses.

Katori Y, Kawase T, Ho Cho K, Abe H, Rodríguez-Vázquez JF, Murakami G, Fujimiya M.SourceDivision of Otorhinolaryngology, Sendai Municipal Hospital, Sendai, Japan.
Clinical anatomy (New York, N.Y.).Clin Anat.2013 Mar;26(2):204-12. doi: 10.1002/ca.22088. Epub 2012 May 10.
The fascial configuration in the suprahyoid parapharyngeal space was evaluated using semiserial sagittal sections of 15 late-stage human fetal heads. The prevertebral fascia covered the longus colli, longus capitis, and rectus capitis lateralis muscles, but was most evident along the longus colli mu
PMID 22576755

A detailed anatomical assessment of the lateral tongue extrinsic musculature, and proximity to the tongue mucosal surface. Does this confirm the current TNM T4a muscular subclassification?

Boland PW, Pataridis K, Eley KA, Golding SJ, Watt-Smith SR.SourceOxford Radiology Research Group, Oxford MRI Centre, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DU, UK, Paul.william.boland@gmail.com.
Surgical and radiologic anatomy : SRA.Surg Radiol Anat.2013 Feb 8. [Epub ahead of print]
PURPOSE: The current T4a subclassification of the TNM staging system for oral malignancies has been criticised as based almost exclusively on anatomical data. The aim of this study was to provide anatomical confirmation of the muscular constraints of T4a classification of oral tongue tumours.METHODS
PMID 23392550

「茎突舌筋」

Styloglossus
	Extrinsic muscles of the tongue. Left side. (Styloglossus visible at center top.)
	Coronal section of tongue, showing intrinsic muscles. (Styloglossus labeled at center left.)
Details
Origin	Styloid process of temporal bone
Insertion	tip and sides of tongue
Artery	sublingual branch of the lingual artery.
Nerve	Hypoglossal nerve (CN XII)
Actions	retraction and elevation of tongue
Identifiers
Latin	musculus styloglossus
TA	A05.1.04.105
FMA	46692
	Anatomical terms of muscle [edit on Wikidata]

　　[★]

英: styloglossus muscle, styloglossus
ラ: musculus styloglossus
関: 外舌筋

カテゴリ

外舌筋＞:外舌筋

Henry Gray (1825-1861). Anatomy of the Human Body. 1918.
Henry Gray (1825-1861). Anatomy of the Human Body. 1918.

匿名

検索

案内

案内

musculus styloglossus