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Quick Answer. Four muscles are used to chew food. They are the masseter, temporalis, medial pterygoid and lateral pterygoid. These muscles are responsible for the chewing action, moving the mandibles from side to side, grinding teeth and even helping us speak. They are also referred to as muscles of mastication..
Making the world better, one answer at a time. The zygomatic arch supports the main jaw muscle, the masseter, which is necessary both for biting and chewing food and for speech. Several other facial muscles attach to the zygomatic bone, as well.he zygomatic process is a connecting point where muscles and  ligaments of the jaw, neck, and face connect. The second function  is that of protection, of the eyes and mout â¦ h.