Why do our stomachs growl? What is blood for? What happens to food when we eat it? The human body is a complex machine. It should come with an owner's manual! In this series, Kristin Petrie, MS, RD, explains how the human body works, what it needs to keep going, and how to keep it healthy. Each book takes young readers on a tour through the body's different systems in fun, easy-to-read text. Full-color photos, detailed diagrams, and medical models enhance the text. - Challenging words are simplified with phonetic guides - Subject matter is illustrated with actual medical specimens - Complex concepts are presented in grade-appropriate language - Full-color Photographs - Index - Websites - Bolded Glossary Terms in TextPetrie, Kristin is the author of 'Skeletal System', published 2006 under ISBN 9781596797147 and ISBN 1596797142.