What is the name of the large tarsal bone that forms the heel?

The large tarsal bone that forms the heel is known as the calcaneus. This bone serves as the foundation for the rear part of the foot and provides crucial support for weight-bearing activities such as walking and running. Its prominent size and location at the back of the foot distinguish it as the primary structure responsible for heel stability. The calcaneus also acts as an attachment point for important ligaments and tendons, including the Achilles tendon, which connects the calf muscles to the heel, allowing for proper movement and function of the foot. The other choices refer to different bones in the foot: the talus is located above the calcaneus and helps form the ankle joint; the navicular is situated in front of the talus; and the cuboid is located on the lateral side of the foot, contributing to the structure of the midfoot. Each of these bones plays a specific role, but the calcaneus is specifically identified as the heel bone.