The Skeletal and Muscular Systems: How Can I Stand on My Head? (Body Systems)

Why do you have a skeleton? What do different muscles do? Where is the longest bone in your body? Your body is amazing! There are parts you can see and parts under your skin that you can't see. These parts work together to keep you alive and help you to do incredible things. You have a skeleton and muscles under your skin. Have you ever wondered how they help your body to move? Read this book in the 'Body Systems' series to find out!