Stylohyoid muscle

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Stylohyoid
Musculi colli stylohyoideus.svg
The stylohyoid among the triangles of the neck.
Stylohyoid muscle.PNG
Muscles of the neck. Anterior view. Stylohyoid muscle in purple
Latin musculus stylohyoideus
Gray's p.392
Origin styloid process (temporal)
Insertion greater cornu of hyoid bone
Nerve facial nerve (CN VII)
Actions Elevate the hyoid during swallowing
Anatomical terms of muscle

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, and functions to draw the hyoid bone backwards and elevate the tongue.

Structure[edit]

Origin and insertion[edit]

It arises from the posterior and lateral surface of the styloid process of the temporal bone, near the base; and, passing inferior and anterior, it is inserted into the body of the hyoid bone, at its junction with the greater cornu, and just superior the omohyoid muscle. It thus belongs to the group of suprahyoid muscles.

When contracted, it elevates the hyoid, this action is primarily brought about during swallowing.

It is perforated, near its insertion, by the intermediate tendon of the digastric muscle.

Innervation[edit]

It is innervated by the mandibular branch of the facial nerve (CN VII).

Variations[edit]

It may be absent or doubled, lie beneath the carotid artery, or be inserted into the omohyoid, or mylohyoid muscles.

Additional images[edit]

See also[edit]

External links[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.