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What are bones made of ?
1.Their are three main parts of the bone. the compact bone, or the outside of the bone, is harder than concrete. Compact bone has canals, or little openings in the side.Spongy bone, located in the ends of the inside, is made to be lightweight, but strong. It's kind of like a mini maze. Last but not least, bone marrow, the center of the inside the bone, stores red blood cells.

How many bones are in your body ?
2. There are two hundred six bones in your body. That includes the cranium, mandible, scapula, clavicle, sternum, humerus, ribs, vertebrae, radius, os coxae, sacrum,pelvis, unla, carpals, coccyx