Stylohyoid muscle

From Wikipedia, the free encyclopedia

Stylohyoid
The triangles of the neck.(Stylohyoid visible at upper right.)
Latin	musculus stylohyoideus
Gray's	subject #112 392
Origin:	styloid process (temporal)
Insertion:	greater cornu of hyoid bone
Artery:
Nerve:	facial nerve (CN VII)
Action:	Elevate the hyoid during swallowing
Dorlands/Elsevier	m_22/12550977

The Stylohyoid muscle is a slender muscle, lying in front of, and above the posterior belly of the digastric muscle. It shares this muscle's innervation by the facial nerve.

Contents 1 Origin and insertion 2 Variations 3 Additional images 4 See also 5 External links

[edit] Origin and insertion

It arises from the back and lateral surface of the styloid process of the temporal bone, near the base; and, passing downward and forward, is inserted into the body of the hyoid bone, at its junction with the greater cornu, and just above the Omohyoideus.

It is perforated, near its insertion, by the tendon of the Digastricus.

[edit] Variations

It may be absent or doubled, lie beneath the carotid artery, or be inserted into the Omohyoideus, Thyreohyoideus, or Mylohyoideus.

[edit] Additional images

Left temporal bone. Outer surface.	Hyoid bone. Anterior surface. Enlarged.	Muscles of the neck. Anterior view.	Superficial dissection of the right side of the neck, showing the carotid and subclavian arteries.
Extrinsic muscles of the tongue. Left side.

[edit] See also

• Stylohyoid ligament

[edit] External links

• LUC styh
• GPnotebook 510328910
• SUNY Figs 34:02-04

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 As such, some of the information contained herein may be outdated.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