Mylohyoid muscle
Updates to Article Attributes
Body
was changed:
The mylohyoid muscles form a paired muscular sling that forms part of the floor of the mouth. It also separates the sublingual space (and oral cavity) from the submandibular space.
Summary
- origin: mylohyoid line/ridge on the medial surface of the mandible
-
insertion:
anterior and middle fibres atmidline raphe that extends from the mandibular symphysis to the hyoid bone, posterior fibres at front of body of hyoid bone near its lower border
Arterial supply
- sublingual branch of the lingual artery
- mylohyoid branch of the inferior alveolar artery
- submental branch of the facial artery
Innervation
- mylohyoid nerve, a branch of the inferior alveolar nerve 2
Action
- elevates the floor of the mouth (e.g. in swallowing or protruding the tongue)
Variant anatomy
- mylohyoid boutonniere: defect in the midportion of the mylohyoid muscle through which sublingual glands, blood vessels, fat, etc. can herniate 1,4
-<strong>insertion</strong>: anterior and middle fibres at midline raphe that extends from the mandibular symphysis to the <a href="/articles/hyoid-bone">hyoid bone</a>, posterior fibres at front of body of hyoid bone near its lower border</li>- +<strong>insertion</strong>: midline raphe that extends from the mandibular symphysis to the <a href="/articles/hyoid-bone">hyoid bone</a>
- +</li>
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