Part 1 Part 2  

  There are four muscles of mastication. 1) Temporalis 2) Masseter 3) Lateral pterygoid 4) Medial pterygoid. The temporalis is a big fan shaped muscle that sits in the temporal fossa and inserts onto the coronoid process of the mandible. It elevates and retracts the mandible. The masseter sits over of the ramus, and angle...