Thyrohyoid - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x 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 (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 thyrohyoid muscle? The thyrohyoid muscle is an infrahyoid muscle located in the deep neck. It connects the thyroid cartilage of the larynx to the hyoid bone. What are the main actions of the thyrohyoid muscle? The primary action of the thyrohyoid muscle is to depress the hyoid bone. If the hyoid is fixed, it can also elevate the larynx. What is the innervation of the thyrohyoid muscle? The thyrohyoid muscle is innervated by the anterior ramus of C1, which travels within the hypoglossal nerve. This innervation is crucial for its motor function. Where does the thyrohyoid muscle receive its blood supply? The blood supply to the thyrohyoid muscle comes from the superior thyroid artery and the inferior thyroid artery. These arteries are branches of the external carotid artery and the thyrocervical trunk, respectively. What is the clinical relevance of the thyrohyoid muscle? Understanding the thyrohyoid muscle is important for procedures involving the neck, as it plays a role in laryngeal elevation and hyoid bone movement. Its innervation and blood supply are also significant during surgical interventions in the region. Rate This Article