Takes a closer look at the lungs' role in the respiratory system. Explores the path air takes once it enters our bodies and lungs and reveals how the lungs play a part in yawning and hiccupping. Each book in this appealing series will introduce young readers to a part of the human body. With engaging text, fun facts, and helpful photos and diagrams, each book explores the appearance and function of the body part and its role in a healthy, working body. These fascinating books also cover proactive care of the body part and common problems related to it. Additional features to aid comprehension include a table of contents, a phonetic glossary, sources for further research, an index, and an introduction to the author

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