Which bone in the hand supports the fingers and thumb?

The bone that supports the fingers and thumb in the hand is the metacarpals. These bones are located in the midsection of the hand, connecting the wrist to the fingers. Each hand has five metacarpals, which articulate with the phalanges (the bones of the fingers), allowing for a range of movements and providing structural support.

The carpals are the wrist bones and play a role in wrist movement and stability, but they do not directly support the fingers and thumb. Phalanges, while they make up the fingers themselves, are the distal segments and do not provide the foundational support from the wrist. The radius is one of the forearm bones and does not contribute to the structure of the fingers and thumb in the same way that metacarpals do.