The Temporalis Muscle
Origin: Temporal fossa and temporal fascia. The fibers blend together to pass between the zygomatic arch and the side of the skull
Insertion: The upper, anterior border and inner surface of the coronoid process and the ramus of the mandible
Actions: Closing of the mouth
Innervation: Branches of the mandibular portion of the trigeminal nerve
Blood Supply: Branches from the maxillary artery
Primary Actions of the Temporalis Muscle
1. Anterior fibres: Elevates mandible
2. Posterior part: Retracts mandible
2. Posterior part: Retracts mandible
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For pain and symptoms see: Temporalis Pain and Symptoms