What is blood? How does it help us? How does it travel around the body? Find answers to all these questions, learn what the heart and lungs do and see what the difference is between veins, arteries and capillaries in this fun non-fiction information book. Useful diagrams and fun cartoons make these difficult concepts accessible and interesting. A diagram of what blood is and how it travels around the body on pages 30 and 31 helps children to recap what they've read.