Answers basic questions about the circulatory system, including "What is blood?", "What makes blood look red?", and "What happens during a heart attack?"
Hardcover
(Macmillan Education Australia Pty Ltd, Jan. 12, 2006)
Exceptional diagrams about the Circulatory System get to the core of the body's machinery and show how everything fits together, making a complex subject both fascinating and fun.