Gradlization of the Modern Human Skeleton

P often think of the human skeleton as a symbol of death. In one sense this is true: Bone resists decomposition better than flesh, so it has a greater chance of being preserved after death. However, bone is also a living tissue. The skeleton is remarkably dynamic during life—even in adults—and it responds to metabolic needs and mechanical requirements. When muscles grow stronger, the underlying bone adapts by changing its physical shape to bear the increased stress. Likewise, atrophied muscles lead to weakened bones. In this way, our bones tell the story of our lives long after we're gone.