stomatognathic system /stō′mətōnath″ik/ [Gk, stoma + gnathos, jaw, systema] , the combination of organs, structures, and nerves involved in speech and reception, mastication, and deglutition of food. This system is composed of the teeth, the jaws, the masticatory muscles, the tongue, the lips, the surrounding tissues, and the nerves that control these structures.