Muscles do far more than help us lift heavy things off the ground. Muscles make the heart work well and move food through the stomach. They allow us to walk, sw

Readers will bone up on their knowledge of the human body with this enlightening text about the skeletal system. The skeleton forms framework for the entire bod

The muscular system is the movement control center of the body. With engaging text, fun facts, and infographics, learn how muscles are responsible for walking,

Colorful graphics, engaging text, and fun, close-up photographs invite young readers to become familiar with their muscular system. In this book, readers will l

As Logan jumps on the bed, what is it that keeps his body moving up and down? The Bod Squad sets out to help prevent him from falling. They shrink down to explo