Colorful graphics, engaging text, and fun, close-up photographs invite young readers to become familiar with their circulatory system. In this book, readers will learn how their heart, blood, and blood vessels work together to keep them alive. Kid-oriented examples of the circulatory system at work are given, such as the formation of a scab. Simple diagrams highlight major parts of the circulatory system. Also described are the different types of blood vessels, the structure of blood, and the main parts of the heart. In addition, readers will learn about nutrition, exercise, and hygiene to keep their circulatory system healthy. Features include a table of contents, fun facts, diagrams, health tips, a glossary with phonetics, and an index. Buddy Books is an imprint of ABDO Publishing Group.