Jaw Muscle Anatomy. The muscle starts from the cheekbone or the zygomatic bone. Dinosaurs evolved an extraordinary diversity of cranial forms adapted to a variety of feeding behaviors.
If you place your fingers on the back of your cheeks and press your teeth together youll feel the muscle tighten. Jaws function by moving in opposition to each other and are used for biting chewing and the handling of food. It is a powerful superficial quadrangular muscle originating from the zygomatic arch and inserts along the angle and lateral surface of the mandibular ramus.
The masseter is primarily responsible for the elevation of the mandible and some protraction of the mandible.
Dinosaurs evolved an extraordinary diversity of cranial forms adapted to a variety of feeding behaviors. Dinosaurs evolved an extraordinary diversity of cranial forms adapted to a variety of feeding behaviors. They are one of the major muscle groups in the head the other being the muscles of facial expression. If you place your fingers on the back of your cheeks and press your teeth together youll feel the muscle tighten.
