8. Joints

Shrugging one's shoulders primarily involves __________.

What motion is ONLY possible at the thumb?

What type of motion is unique to mammals and is characterized by the posterior teeth gliding from side to side in a grinding motion?

Chewing involves the __________ joint.

A twisting motion of the foot that turns the sole inward is called __________.

__________ refers to movement of the radius around the ulna when the palms of the hands are rotated so that the palms are facing upward.