Simple, humorous text and comic illustrations explain the basics of the circulatory system--the systemic, pulmonary, and coronary circuits. Readers follow a red blood cell on its journey through the body, and in the process learn how the body combats disease, performs gas exchanges, and fights plaque.

Mary Corcoran writes a science column for kids, which appears in The Redding Pilot. She is the author of THE QUEST TO DIGEST and THE CIRCULATORY STORY. Mary lives in Redding, Connecticut.