Sternohyoid muscle

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Sternohyoid muscle

Muscles of neck. (Sternohyoideus visible at middle, just to the right of thyroid cartilage.)

Posterior surface of sternum and costal cartilages, showing Transversus thoracis. (Sterynohyoideus visible at center top.)
Latin	musculus sternohyoideus
Gray's	subject #112 393
Origin:	manubrium
Insertion:	hyoid bone
Blood:
Nerve:	ansa cervicalis
Action:
Dorlands/Elsevier	m_22/12550951

The sternohyoid muscle is a thin, narrow muscle attaching the hyoid bone to the sternum, one of the paired strap muscles serving to depress the hyoid bone. It is innervated by the ansa cervicalis.

The muscle arises from the posterior border of the medial end of the clavicle, the posterior sternoclavicular ligament, and the upper and posterior part of the manubrium sterni.

Passing upward and medially, it is inserted by short tendinous fibers into the lower border of the body of the hyoid bone.

[edit] Variations

Doubling; accessory slips (Cleidohyoideus); absence.

It sometimes presents, immediately above its origin, a transverse tendinous inscription.

[edit] Additional images

Section of the neck at about the level of the sixth cervical vertebra.

The fascia and middle thyroid veins. The veins here designated the inferior thyroid are called by Kocher the thyroidea ima.

[edit] External links

LUC steh
PTCentral
SUNY Labs 25:10-0103 - "Nerves and Vessels of the Carotid triangle"
Dictionary at eMedicine sternohyoid+%28muscle%29

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 As such, some of the information contained herein may be outdated.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

Muscles of the Head — Neck — Trunk — Upper limb — Lower limb— LIST OF ALL MUSCLES