Stylohyoid muscle
| Stylohyoid | |
|---|---|
| File:Musculi colli stylohyoideus.svg The stylohyoid among the triangles of the neck. | |
| File:Stylohyoid muscle.PNG Muscles of the neck. Anterior view. Stylohyoid muscle in purple | |
| Details | |
| Origin | Styloid process (temporal) |
| Insertion | Greater cornu of hyoid bone |
| Nerve | Facial nerve (CN VII) |
| Actions | Elevate the hyoid during swallowing |
| Identifiers | |
| Latin | musculus stylohyoideus |
| TA98 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of muscle [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
The stylohyoid muscle is one of the suprahyoid muscles.[1] Its originates from the styloid process of the temporal bone; it inserts onto hyoid bone. It is innervated by a branch of the facial nerve. It acts draw the hyoid bone upwards and backwards.
Structure
[edit | edit source]The stylohyoid is a slender muscle.[2] It is directed inferoanteriorly from its origin towards its insertion.[3]
It is perforated near its insertion by the intermediate tendon of the digastric muscle.[3]
Origin
[edit | edit source]The muscle arises from the posterior surface of the temporal styloid process; it arises near the base of the process. It arises by a small tendon of origin.[3]
Insertion
[edit | edit source]The muscle inserts onto the body of hyoid bone at the junction of the body and greater cornu.[3]
It passes anterior to the intermediate tendon of the digastric muscle and is inserted immediately superior to that of the superior belly of omohyoid muscle.[3]
Vasculature
[edit | edit source]The stylohyoid muscle receives arterial supply branches of the facial artery, posterior auricular artery, and occipital artery.[3]
Innervation
[edit | edit source]The stylohyoid muscle receives motor innervation from the stylohyoid branch of facial nerve (CN VII).[3]
Relations
[edit | edit source]The muscle is situated anterosuperior to the posterior belly of the digastric muscle.[2]
Variation
[edit | edit source]It may be absent or doubled. It may be situated medial to the carotid artery. It may insert suprahyoid muscles of infrahyoid muscles.[3]
Actions/movements
[edit | edit source]The stylohyoid muscle elevates and retracts the hyoid bone (i.e. draws it superiorly and posteriorly).[3]
Function
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![[icon]](/index.php/File:Wiki_letter_w_cropped.svg){kind=link}
The stylohyoid muscle elongates the floor of the mouth.[3] It initiates a swallowing.[citation needed]
Additional images
[edit | edit source]-
Left temporal bone. Outer surface.
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Hyoid bone. Anterior surface. Enlarged.
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Superficial dissection of the right side of the neck, showing the carotid and subclavian arteries.
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Extrinsic muscles of the tongue. Left side.
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Stylohyoid muscle
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Stylohyoid muscle
See also
[edit | edit source]References
[edit | edit source]Public domain This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
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External links
[edit | edit source]Anatomy figure: 34:02-04 at Human Anatomy Online, SUNY Downstate Medical Center
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