TMJ Muscles contributing to the same function Contents ELEVATION Temporalis Masseter Medial Pterygoid PROTRACTION Medial Pterygoid (secondary function) Lateral Pterygoid Masseter (secondary function) CONTRALATERAL DEVIATION Medial Pterygoid (secondary function) Lateral Pterygoid (secondary function) DEPRESSION Digastric (secondary function) Mylohyoid (secondary function) Genihyoid (secondary function) Platysma RETRACTION Temporalis (secondary function) Masseter (secondary function) Digastric (secondary function)