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).