Omohyoid muscle
The omohyoid muscle is a muscle in the neck. It is one of the infrahyoid muscles. It consists of two bellies separated by an intermediate tendon. Its inferior belly is attached to the scapula; its superior belly is attached to the hyoid bone. Its intermediate tendon is anchored to the clavicle and first rib by a fascial sling. The omohyoid is innervated by the ansa cervicalis of the cervical plexus. It acts to depress the hyoid bone.
| Omohyoid muscle | |
|---|---|
The omohyoid muscle, highlighted. | |
Muscles of the neck. Anterior view. Omohyoid is labeled on both sides. | |
| Details | |
| Origin | Upper border of the scapula (Inferior belly), Intermediate Tendon (Superior Belly) |
| Insertion | Intermediate Tendon (Inferior Belly), Hyoid Bone (Superior Belly) |
| Artery | Branches from the inferior thyroid artery (ITA) |
| Nerve | Ansa cervicalis (C1-C3) |
| Actions | Depresses the larynx and hyoid bone. Also carries hyoid bone backward and to the side. |
| Identifiers | |
| Latin | musculus omohyoideus |
| TA98 | A04.2.04.003 |
| TA2 | 2169 |
| FMA | 13342 |
| Anatomical terms of muscle | |
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