Corpus: Arm

The arm is structured into three primary sections:

• upper arm
• forearm
• hand, which further consists of:
  • carpus (wrist bones)
  • metacarpus (bones of the mid-hand)
  • fingers (phalanges)

The arm’s structure involves several bones:

• humerus (upper arm bone)
• ulna and radius (forearm bones)
• carpal bone (bones of the wrist, or ossa carpi)
• metacarpal bones (bones of the mid-hand, or ossa metacarpi)
• phalanges (bones of the fingers)

The human arm boasts the most extensive range of movement of any body part. Its functions are diverse, including serving as a tool for gripping and manipulation, as well as playing a crucial role in maintaining body balance. This versatility allows for a wide array of movements and activities, from fine motor skills to aiding in overall body equilibrium.