There are many domestic animals that have the ability to move their jaw sideways. One of these animals is the human.
A Cats Lower Jaw Cannot Move Sideways. ~The Rapping Genius Lyriticus
The dog's jaw moves up and down and from side to side, in a grinding motion. The jaws move sideways across the teeth. The cat's jaw moves only up and down, there is no side to side grinding motion. There is no sideways movement.
the lateral pterygoid
Medial pterygoid
Because your upper jaw is part of your skull which is connected to your spine and your lower jaw is connected to your upper jaw by a hinge type joint that allows you to move your lower jaw so that we can eat. So therefore we cannot move our upper jaw because that would require moving our head which would move our lower jaw too.
Because your upper jaw is part of your skull which is connected to your spine and your lower jaw is connected to your upper jaw by a hinge type joint that allows you to move your lower jaw so that we can eat. So therefore we cannot move our upper jaw because that would require moving our head which would move our lower jaw too.
by its jaw
No. It is part of your skull so it doesn't move like your lower jaw. Your lower jaw moves because it is a separate bone attached to the tendons and muscles that move it.
The medial pterygoid muscle, the left medial pterygoid will deviate the jaw to the right and vice versa.
Horses chew by moving their lower jaw in an oval pattern because their lower jaw is narrower than the upper jaw. As the jaw closes, it moves from one side to the other. As it opens it returns to the original position.
To move your jaw
the thing that can move in your skull is your (mandible)or jaw.