Metacarpus

The metacarpus is the middle section of the bones in the hand.

There are five metacarpal bones:
 * First metacarpal bone - part of the thumb.
 * Second metacarpal bone - part of the index finger.
 * Third metacarpal bone - part of the middle finger.
 * Fourth metacarpal bone - part of the ring finger.
 * Fifth metacarpal bone - part of the pinky finger.