The temporalis is a broad, fan-shaped muscle located on the side of the head. It plays a crucial role in the movement of the jaw, specifically in closing the mouth and chewing food. This muscle is one of the primary muscles involved in the process of mastication, working alongside other muscles like the masseter. Originating from the temporal fossa of the skull, the temporalis muscle attaches to the coronoid process of the mandible. Its contraction allows for powerful biting and grinding motions, making it essential for effective digestion. Proper function of the temporalis is important for overall oral health and comfort.