Second metacarpal bone
Skeleton · part of Bones of free part of upper limb
The second metacarpal bone (metacarpal bone of the index finger) is the longest, and its base the largest, of all the metacarpal bones. (Wikipedia)
Skeleton · part of Bones of free part of upper limb
The second metacarpal bone (metacarpal bone of the index finger) is the longest, and its base the largest, of all the metacarpal bones. (Wikipedia)