The omohyoid muscle is an infrahyoid muscle of the neck. It consists of two muscular bellies which are connected via a muscular tendon. Attachments: Superior belly arises from the hyoid bone and inferior belly arises from the scapula. Two muscle bellies are connected by an intermediate tendon, which is anchored to the clavicle by the deep cervical fascia. Actions: Depresses the hyoid bone. Innervation:Â Anterior rami of C1-C3, carried by a branch of the ansa cervicalis. Blood Supply: Superior thyroid artery (branch of the external carotid artery) and inferior thyroid artery (branch of the thyrocervical trunk). By TeachMeSeries Ltd (2025) Fig 1- Anterior view of the infrahyoid muscles of the neck. By TeachMeSeries Ltd (2025) Fig 2Lateral view of the infrahyoid muscles of the neck. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Print Article Rate This Article