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Body Parts > Arms

The Human Arm

The human arm is made up of several segments that together make it one of the most useful and complex tools of the human body. These parts are:

  • Upper arm: Extending from the shoulder to the elbow, the upper arm provides pulling and lifting strength.
  • Elbow: This hinged joint allows the arm to open up to 180 degrees at full extension.
  • Forearm: The forearm is the area between the wrist and the elbow. The muscles in the forearm rotate, flex, and extend the wrist.
  • Wrist: Located in the upper hand, eight carpal bones — along with multiple muscles and tendons — form this intricate area.
  • Hand: With five fingers, the hand allows humans to do much more complicated tasks than any other animal.