when the bone is steadied, three muscles (mylohyoid, geniohyoid, and digastric)lower the mandible and thus are antagonists of the muscle of  mastication, The hyoid bone is steadied by muscles lying below it (sternohyoid, omohyoid,etc.) without this steadying the mandible cannot be lowered since the hyoid bone, which is lighter and more mobile than the mandible will be raised. The same three muscles the mylohyoid in particular, on contraction during swallowing raise the tongue and press it to the palate, as a result of which food is pushed into the pharynx. Medical Coding Services helps in the proper collections for the services.