No, a thumb is not a bone. It is a digit containing bones. The thumb has two bones: the metacarpal and the proximal phalanx.
The metacarpal is the bone that connects the thumb to the wrist. The proximal phalanx is the bone that connects the metacarpal to the thumb tip.
The thumb is the most mobile digit in the hand, allowing for a wide range of movement. It plays a vital role in grasping, holding, and manipulating objects.
