One objective of facial animation is to create faces that not only appear realistic, but also move realistically in animated sequences. Understanding the underlying anatomy of the face provide insights to how and why the face is shaped the way it is as well as to why the face moves in particular ways. In many respects this is why artists and animators study the human anatomy.
The components of the face that are particular interest to face modeling and animation are commonly known as the bones, muscles and skin. The study of anatomy is specific science and is beyond the scope of this course. However a basic understanding of the principle components is necessary.