Final answer:
The metacarpal bone is not one of the five bones that form the medial longitudinal arch of the foot; this arch consists of various tarsal and metatarsal bones.
Step-by-step explanation:
The five bones that form the medial longitudinal arch of the foot consist of tarsal and metatarsal bones. Specifically, these bones are the calcaneus, the talus, the navicular, the medial cuneiform, and the first metatarsal bone. Given this information, and based on the fact that the metacarpal bones are part of the hand, the metacarpal bone would be the bone that is not part of the five bones that form the medial longitudinal arch in the foot.
The five bones that form the medial longitudinal arch of the foot are the calcaneus, talus, navicular, medial cuneiform, and the first metatarsal bone. Of these options, the bone that is not one of the five bones that form the medial longitudinal arch is the lateral cuneiform bone.