"What do the kidneys do? How does the immune system work? Why do we sneeze?" This book helps readers understand what goes on inside the human body. It covers every aspect of what makes us function, from the oxygen we breathe to the blood our hearts pump to how we smell, taste, think, and feel. Incredible cutaway illustrations show the body's various organs and systems while descriptive text and sidebars reveal the body's secrets. Four acetate overlays feature: The Human Body: cutaway views show all the body's systems The Brain: sliced views of the command center Food as Fuel: inside the stomach New Life: from a 4-week embryo to a full-term fetus. The "Uncovering" series: Exposing science and technology in stunning color and detail. Jam-packed with exacting full-color illustrations, these titles focus on topics of particular interest to young readers. Informative text and descriptive captions and sidebars complement dozens of annotated drawings. Each book contains four acetate overlays, used in some cases to show changes over time, in others to show a cutaway interior.