What bone structure forms the tip of each finger?

The distal phalanx is the bone structure that forms the tip of each finger. Each finger consists of three phalanges—proximal, middle, and distal—except for the thumb, which has two (proximal and distal). The distal phalanx is the furthest from the hand and is responsible for supporting the fingertip, providing stability and a surface for the fingernail to attach. This structure is crucial for dexterity and grip, allowing for precise movements and functions of the fingers.

In terms of anatomy, the proximal phalanx occurs nearer to the hand (closer to the metacarpals). The metacarpal bones, which are the bones of the hand that connect to the fingers, provide the framework of the hand, while carpal bones are the wrist bones that support the hand's structure. Understanding the relationships and locations of each of these bones helps clarify why the distal phalanx is specifically responsible for forming the tip of each finger.