The metacarpals are five long bones located in the hand, connecting the wrist to the fingers. Each metacarpal corresponds to a finger, with the thumb having its own unique structure. These bones play a crucial role in hand movement and function, allowing for gripping and manipulation of objects. Each metacarpal consists of a base, shaft, and head. The base connects to the wrist bones, while the head forms the knuckles at the joints with the fingers. The metacarpals are essential for hand strength and dexterity, contributing to various activities such as writing and typing.