About how many bones does an adult have?

• A. 190
• B. 260
• C. 206
• D. 226

Answer: (C)

An adult human skeleton typically has about 206 bones. This number comes from how our bones change as we grow: at birth you have roughly 270 bones, but many of these fuse together during development. The skull bones, parts of the spine, and other bones in the limbs gradually join to form a single structure, decreasing the total to around 206 in a typical adult. Remember that small variations exist—some people have extra bones called supernumerary bones in hands, feet, or elsewhere, which can raise the count slightly. The other numbers aren’t as representative because they don’t reflect the common fusion that occurs during growth to reach the usual adult total.