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You know you use your mouth and vocal cords to talk its a part of your muscular system that helps you talk another muscle that helps you talks is orbicularis oris muscle. It goes from the lips then encircles the mouth to help talk.
when you talk you use your mandible to open up your mouth and then your vocal cords take over its a part of the skeletal system
You use the nervous system by using your nodes it helps by that controls the body in helping to open your mouth and speak. You also use your risorius to talk and this is part of the nervous system
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