/är-ti-kyə-lə-tȯr-ē mə-səls/
the
tongue, jaw and lip muscle groups as part of the
vocal tract, which assist in the dimension of articulation; tongue muscles include the tongue itself (superior, inferior and transverse longitudinal) and the attached muscles (palatoglossus, styloglossus, hyoglossus, genioglossus and geniohyoid); jaw muscles include the mastacian and mandibular depressors (temporalis, masseters, stylohoid, pterygoids, digastrics, mylohyoids and platysmas); lip muscles include the orbicularis oris and the surrounding expression muscles (levator labiis, zygomaticus, risorius, buccinator, depressors and mentalis)