GUSTOIMAGES / SCIENCE PHOTO LIBRARY GUSTOIMAGES / SCIENCE PHOTO LIBRARY
Hand. Coloured X-rays of the healthy right hand of a male adult. The thumb is at left. There are two phalanx bones (phalanges) in the thumb and three in each finger. The palm contains the metacarpal bones (centre left and right) with the carpal bones of the wrists (lower left and right) below. The ends of the arm bones, the radius (thicker bone) and ulna, are seen at bottom.
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