Sternohyoid - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The sternohyoid is an infrahyoid muscle of the neck. It is located in the superficial plane of the neck, along with the omohyoid muscle. Attachments: Originates from the sternum and sternoclavicular joint. Ascends to insert onto the hyoid bone. 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 Pro Feature - Dissection Atlas The thyroid gland and surrounding structures. The thyroid gland and surrounding structures. You've Discovered a Pro Feature Access our Dissection Image Library Enhance your understanding with high-resolution dissection images showcasing real-life anatomy. Learn More Frequent questions What is the sternohyoid muscle? The sternohyoid is an infrahyoid muscle located in the neck that plays a crucial role in the movement of the hyoid bone. It lies in the superficial plane of the neck alongside the omohyoid muscle. Where does the sternohyoid muscle attach? The sternohyoid originates from the sternum and the sternoclavicular joint, ascending to insert onto the hyoid bone. This positioning allows it to effectively perform its function. What is the primary action of the sternohyoid muscle? The main action of the sternohyoid is to depress the hyoid bone. This movement is essential for various functions, including swallowing and speech. How is the sternohyoid muscle innervated? The sternohyoid muscle receives its innervation from the anterior rami of C1-C3, which are conveyed by a branch of the ansa cervicalis. This nerve supply is vital for its motor function. What is the blood supply to the sternohyoid muscle? The sternohyoid muscle is supplied by the superior thyroid artery, a branch of the external carotid artery, and the inferior thyroid artery, which branches from the thyrocervical trunk. This vascular supply supports the muscle's metabolic needs. Rate This Article