Mylohyoid

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: Mylohyoid branch of the inferior alveolar artery (itself a branch of the maxillary artery).

By TeachMeSeries Ltd (2025)

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

By TeachMeSeries Ltd (2025)

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