The calcis (calcaneus) is which bone in the body?

• A. The Elbow
• B. The Heel Bone
• C. A Calcium Deposit In A Bone
• D. The Wrist

Answer: (B)

The question tests your knowledge of which bone is known as the heel bone. The calcaneus, also called calcis, is the heel bone of the foot—the largest tarsal bone that forms the back part of the foot’s underside. It sits beneath the talus and bears much of body weight when standing and walking, acting as a lever for the Achilles tendon and providing attachment points for strong ligaments and muscles. This distinguishes it from the elbow or wrist, which are in the arm and hand, and from any calcium deposit, which would be a calcification rather than a bone. So identifying the calcaneus as the heel bone correctly matches its location and role in the foot.