Stylohyoid muscle

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Stylohyoid
The stylohyoid among the triangles of the neck.
Muscles of the neck. Anterior view. Stylohyoid muscle in purple
Latin	musculus stylohyoideus
Gray's	subject #112 392
Origin	styloid process (temporal)
Insertion	greater cornu of hyoid bone
Artery
Nerve	facial nerve (CN VII)
Actions	Elevate the hyoid during swallowing

The Stylohyoid muscle is a slender muscle, lying anterior, and superior of 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 posterior and lateral surface of the styloid process of the temporal bone, near the base; and, passing inferior and anterior, is inserted into the body of the hyoid bone, at its junction with the greater cornu, and just superior the Omohyoideus. It thus belongs to the group of suprahyoid muscles.

It is perforated, near its insertion, by the intermediate 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.

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
• 510328910 at GPnotebook
• 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 As such, some of the information contained within it may be outdated.

v • d • e List of muscles of head and neck: the neck (TA A04.2, GA 4.387) Cervical CN VII (superficial, PC): platysma CN XI (deep): sternocleidomastoid C1-C6 (anterior): Prevertebral muscles: longus (capitis, colli) C3-C8 (lateral): scalene (anterior, medius, posterior) Suboccipital C1: rectus capitis posterior (major, minor) · obliquus capitis (inferior, superior) C1-C6 (anterior): Prevertebral muscles: rectus capitis (anterior, lateralis) Suprahyoid CN V3 (medial): mylohyoid · anterior belly of digastric CN VII (lateral): stylohyoid · posterior belly of digastric C1 (deep): geniohyoid Infrahyoid/strap C1: thyrohyoid C1-C3: sternohyoid  · sternothyroid · omohyoid Fasciae Deep cervical fascia (Pretracheal fascia, Prevertebral fascia, Investing layer) · Carotid sheath · Alar fascia pharynx: Buccopharyngeal fascia · Pharyngobasilar fascia Palatine aponeurosis Pharyngeal raphe Pharynx pharyngeal constrictor (superior, middle, inferior) · longitudinal (stylopharyngeus, salpingopharyngeus) Larynx cricothyroid · cricoarytenoid (posterior, lateral) · arytenoid (oblique arytenoid/aryepiglottic, transverse arytenoid) · thyroarytenoid (vocal, thyroepiglottic)

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