The Skeletal System
A Look at the Human Body
An adult has 206 bones in their body, but the skeletal system includes much more than these bones. It also includes cartilage, ligaments, and tendons, altogether making up about one-fifth of a human's total body weight. Your readers will learn about this incredible system that is the framework of their bodies. Eye-catching photographs correlate closely with engaging, accessible text, encouraging a deeper understanding of the key scientific concepts discussed. Concise fact boxes present additional information in separate, manageable sections.