Which of the following bones is NOT part of the human leg?

The choice that identifies a bone not part of the human leg is correct because the carpals actually refer to the collection of eight small bones that make up the wrist. These bones are involved in the structure and movement of the hand and wrist but do not have any anatomical or functional role in the leg.

In contrast, the fibula, tibia, and patella are all critical components of the leg. The tibia is the larger and stronger of the two lower leg bones, commonly known as the shinbone. The fibula is the slimmer bone that runs alongside the tibia, and while it is not a weight-bearing bone, it provides support and stability to the ankle. The patella, commonly known as the kneecap, is a small bone that protects the knee joint. Each of these bones plays an essential part in the anatomy, function, and movement of the leg.