Which of the following describes the movements known as pronation and supination? A. The fl exing of the arm with respect to the forearm around the elbow. B. The swivelling of the foot to the medial and lateral directions. C. The twisting of the wrist while the elbow is held motionless. D. The rotation at the shoulder that causes the arm to describe a cone shape.
Option C. Pronation takes place while the radius is moved from a function paral- lel to the ulna to at least one wherein it crosses over the ulna and supination is the return motion (can be notion of because the movement we carry out while turning off a wall- set up tap).
