Omohyoid - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x 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: 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 (2026) Fig 1- Anterior view of the infrahyoid muscles of the neck. By TeachMeSeries Ltd (2026) 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 Frequent questions What is the omohyoid muscle? The omohyoid muscle is an infrahyoid muscle located in the neck, composed of two bellies connected by a tendon. It plays a crucial role in depressing the hyoid bone during various movements. Where does the omohyoid muscle attach? The superior belly of the omohyoid muscle attaches to the hyoid bone, while the inferior belly attaches to the scapula. These bellies are joined by an intermediate tendon that is secured to the clavicle by deep cervical fascia. What is the function of the omohyoid muscle? The primary function of the omohyoid muscle is to depress the hyoid bone. This action is important for swallowing and speaking, as it helps to stabilise the hyoid during these processes. How is the omohyoid muscle innervated? The omohyoid muscle is innervated by the anterior rami of spinal nerves C1-C3, which travel via a branch of the ansa cervicalis. This innervation is essential for the muscle's proper function. What is the blood supply to the omohyoid muscle? The omohyoid muscle receives its blood supply from the superior thyroid artery, a branch of the external carotid artery, and the inferior thyroid artery, which branches from the thyrocervical trunk. Adequate blood flow is vital for muscle health and function. Rate This Article