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Mylohyoid

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Original Author(s): Max Bidewell
Last updated: January 20, 2023
Revisions: 3

Original Author(s): Max Bidewell
Last updated: January 20, 2023
Revisions: 3

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The mylohyoid is a suprahyoid muscle of the neck. It is a triangular shaped muscle which forms the floor of the oral cavity and supports the floor of the mouth. 

  • Attachments: Originates from the mylohyoid line of the mandible, and attaches onto the hyoid bone.
  • Actions: Elevates the hyoid bone and the floor of the mouth.
  • Innervation: Inferior alveolar nerve, a branch of the mandibular nerve (which is derived from the trigeminal nerve).
  • Blood Supply: Vertebral artery and the deep descending branch of the occipital artery.

Fig 1 – Lateral view of the neck with three of the suprahyoid muscles highlighted (digastric, mylohyoid and stylohyoid)

Fig 2 – Anterior view of the neck with the suprahyoid muscles highlighted.