Temporalis - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The temporalis is a muscle of mastication (chewing). It is located on the lateral aspect of the skull. Attachments: Originates from the temporal fossa of the skull and attaches onto the coronoid process of the mandible. Actions: Elevation of the mandible (closing the mouth). Also performs retraction of the mandible, moving the jaw posteriorly. Innervation: Mandibular nerve (V3). Blood supply – Maxillary artery and superficial temporal artery. By TeachMeSeries Ltd (2026) Fig 1The temporalis muscle. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Frequent questions What is the function of the temporalis muscle? The temporalis muscle is primarily responsible for elevating the mandible, which facilitates the closing of the mouth during chewing. Additionally, it assists in retracting the mandible, moving the jaw backward. Where does the temporalis muscle originate and attach? The temporalis muscle originates from the temporal fossa of the skull and attaches to the coronoid process of the mandible. This anatomical positioning allows it to effectively perform its functions in mastication. How is the temporalis muscle innervated? The temporalis muscle is innervated by the mandibular nerve, which is the third division of the trigeminal nerve (V3). This nerve supplies the muscle with the necessary signals for movement. What arteries supply blood to the temporalis muscle? The blood supply to the temporalis muscle is primarily provided by the maxillary artery and the superficial temporal artery. These vessels ensure that the muscle receives adequate nutrients and oxygen for its function. What role does the temporalis play in mastication? The temporalis muscle plays a crucial role in mastication by elevating the mandible to close the mouth and retracting the jaw to assist in grinding food. Its actions are essential for effective chewing and digestion. Rate This Article