Omohyoid

The omohyoid muscle is an infrahyoid muscle of the neck. It consists of two muscular bellies which are connected via a muscular tendon.

• Attachments:
  • Superior belly arises from the hyoid bone and inferior belly arises from the scapula.
  • Two muscle bellies are connected by an intermediate tendon, which is anchored to the clavicle by the deep cervical fascia.
• 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 (2025)

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

By TeachMeSeries Ltd (2025)

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