MIRIAM MASLO / SCIENCE PHOTO LIBRARY MIRIAM MASLO / SCIENCE PHOTO LIBRARY
Wrist bones, coloured X-ray. The wrist joint is seen from the top at left and from the side at right. In the top view, the bones of the forearm are at bottom: the ulna (left) and the radius (right). The wrist joint comprises eight small bones called carpals. These articulate with the five bones of the palm, called metacarpals (top). The thumb is at right.
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