The thyrohyoid muscle is an infrahyoid muscle of the neck. It is located in the deep plane of the neck, along with the sternothyroid muscle. Attachments: Arises from the thyroid cartilage of the larynx and ascends to attach to the hyoid bone. Actions: Depresses the hyoid. If the hyoid bone is fixed, it can elevate the larynx. Innervation: Anterior ramus of C1, carried within the hypoglossal nerve. 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