Name

# Geniohyoid

Pronunciation

(GEE-ne-o-HY-oid)

Origin/Proximal Attachment

Inferior mental spine of mandible

Insertion/Distal Attachment

Body of hyoid bone

Action/Relevance

Pulls hyoid bone forwards & upwards Shortens floor of mouth

Innervation

Cranial nerve 12

Notes

The Geniohyoideus (Geniohyoid muscle) is a narrow muscle, situated above the medial border of the Mylohyoideus. It arises from the inferior mental spine on the back of the symphysis menti, and runs backward and slightly downward, to be inserted into the anterior surface of the body of the hyoid bone; it lies in contact with its fellow of the opposite side.