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Which muscle is involved in mastication and is located above and in front of the ear?

  1. Abductor

  2. Supinator

  3. Buccinator

  4. Temporalis

The correct answer is: Temporalis

The muscle involved in mastication and located above and in front of the ear is the temporalis muscle. The temporalis muscle is responsible for closing the jaw during chewing. The other options, abductor, supinator, and buccinator, are not involved in mastication and are located elsewhere in the body. The abductor muscle is responsible for moving a body part away from the midline of the body, the supinator muscle helps to rotate the forearm, and the buccinator muscle is involved in sucking and blowing actions of the cheeks. Thus, these options are incorrect as they do not fit the criteria of the question.