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Geniohyoid
Other Terms:
Musculus geniohyoideus,
Muscle génio-hyoïdien
Muscle parts
None
Latin name
Musculus geniohyoideus
Latin muscle parts
None
Group
Cervical wall – ventral muscle (Suprahyoid muscle)
Etymology
In English this muscle’s name is the muscle of the chin and the U-shaped bone. The word geniohyoid can be divided into the Greek words genion meaning “chin” and hyoid. The term hyoid comes from its resemblance to the Greek letter upsilon (u), which is aspirated as hy. This is combined with the suffix eidos meaning “shape or form.”
Origin
Inferior mental spine on the internal surface of the anterior mandible
Insertion
Anterior border of the hyoid body
Action
Elevates the unfixed hyoid bone; when the hyoid is fixed it helps depress the mandible.
Nerve supply
Ventral ramus via the hypoglossal nerve (C1)
Blood supply
The sublingual artery, a branch of the lingual artery, supplies the muscle. It also receives blood from the submental artery, a branch of the facial artery, which anastomoses within the muscle with the sublingual artery and the mylohyoid branch of the inferior alveolar artery via the first part of the maxillary artery.
Latin
Musculus geniohyoideus
French
Muscle génio-hyoïdien
