What term describes the rotation of the forearm when turning over a can to empty it?

• A. Supination
• B. Opposition
• C. Pronation
• D. Flexion

Answer: (C)

The term that describes the rotation of the forearm when turning over a can to empty it is pronation. Pronation involves the movement that turns the palm of the hand downwards or backwards. When you rotate your forearm to pour out the contents of a can, your palm faces downward, and this action is classified as pronation.

In contrast, supination refers to the act of turning the palm upward or forward, which is the opposite of what occurs when emptying a can. Opposition typically refers to the movement that brings the thumb across the palm to touch the fingertips, a distinct motion not related to forearm rotation. Flexion describes the bending of a joint, which is not applicable in this context because it pertains to decreasing the angle between body parts rather than the rotation of the forearm. Thus, pronation is the correct term for this specific rotational movement.