The masseter muscle is one of the primary muscles responsible for chewing. It is located at the back of the jaw and connects the zygomatic bone (cheekbone) to the lower jaw, or mandible. This muscle plays a crucial role in elevating the jaw, allowing for the grinding and crushing of food during the eating process. In addition to its function in chewing, the masseter muscle is one of the strongest muscles in the human body relative to its size. It is innervated by the trigeminal nerve, which is responsible for sensation in the face and motor functions such as biting and chewing.