Heart

Did you know that the heart is a muscle in the circulatory system? The heart has four parts called chambers. Learn more about the appearance and function of this body part in Heart, an All About Your… book. Each All About Your… title features easy-to-read text, stunning visuals, and a challenging educational activity. All About Your… is a series of AV² media enhanced books. A unique book code printed on page 2 unlocks multimedia content. These books come alive with video, audio, weblinks, slide shows, activities, hands-on experiments, and much more.