ANATOMY

Detailed explanation-1: -The lower jaw bone is the only moveable bone of the skull and is attached to muscles involved in chewing and other mouth movements. It also holds the bottom teeth in place. Also called mandible.

Detailed explanation-2: -The upper part is the maxilla. It doesn’t move. The moveable lower part is called the mandible. You move it when you talk or chew.

Detailed explanation-3: -The left and right halves of the lower jaw, or mandible, begin originally as two distinct bones, but in the second year of life the two bones fuse at the midline to form one. The horizontal central part on each side is the body of the mandible.