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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

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