Lateral pterygoid (HOLES book, pg 155 part a )
The platysma muscle primarily depresses the mandible, which is the lower jawbone. It contributes to facial expressions by allowing for movements such as frowning or pulling the lower lip down. Additionally, it can also assist in tensing the skin of the neck and aiding in movement of the lower face.
The masseter muscle is the chewing muscle covering the angle of the mandible. During bilateral contraction, the muscle elevates the mandible, raising the lower jaw.
The formation of mandible helps serve for the reception of the lower jaw.
Shut up lamess
The antagonist muscle opposes a movement, slows it down and returns the appendage to is natural position once the movement is complete. They work in conjunction with agonist muscles in creating a balanced movement and return.
The temporalis muscle acts to elevate and retract the mandible (lower jaw) during the process of chewing. It is one of the main muscles involved in mastication (chewing) and helps in closing the mouth during jaw movements.
Only one, the mandible or lower jaw.Only one, the lower jaw or mandible.
The mandible
The Black Skimmer is the only bird to have a lower mandible longer than the upper mandible.
A human's chin is primarily made of bone, specifically the mandible bone. This bone helps to support the lower teeth and provide structure to the lower part of the face. Additionally, the chin may also contain some muscle and soft tissue.
Upper one is maxilla and lower one is mandible
Upper jaw is a maxilla, and the lower jaw is a mandible.