Bold text== Headline text == The temporalis muscle is one of the muscles of mastication. Structure It arises from the temporal fossa and the deep part of temporal fascia. It passes medial to the zygomatic arch and inserts onto the coronoid process of the mandible. The temporalis muscle is covered by the temporal fascia, also known as the temporal aponeurosis. The muscle are accessible on the temples, and can be seen and felt contracting while the jaw is clenching and unclenched. Innervation As… (More on Temporalis)