Written by Max Bidewell

Last updated January 20, 2023 • 5 Revisions

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).

Fig 1- Anterior view of the infrahyoid muscles of the neck.

Fig 2
Lateral view of the infrahyoid muscles of the neck.

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