How many phalanges do fingers have, excluding the thumb?

Each finger, excluding the thumb, has three phalanges: the proximal phalanx, the middle phalanx, and the distal phalanx. This anatomical structure allows for a greater range of motion and dexterity in the fingers, which is crucial for activities like gripping and manipulating objects. In contrast, the thumb has only two phalanges: the proximal and distal phalanx. By understanding the structure of the fingers, one can appreciate the complexity and functionality of the hand as a whole.