The Hand and Forearm

The human skeleton contains more than 200 bones. The largest proportion of them are in the hands. Each hand contains 27 bones.  

The forearm starts just below the elbow where the two bones, the radius and ulna, connect to the humerus.  The radius is on the thumb side and the ulna is on the little finger side of the forearm.  Both bones extend from elbow to wrist.  Turning of the lower arm so we can have our palms either facing up or down, is possible thanks to the radius pivoting around the ulna.  There are two joints needed for this movement and these are located at either end of the ulna and radius.  The proximal radioulnar joint at the elbow end and the distal radioulnar joint at the wrist end.  

Please read through the PDF and complete the quiz, good luck!