Jolivet's linocuts offer a new vision of the human body at once stylized and rich in detail. An ingenious system of flaps helps readers discover different parts of the human body. Four large head-to-toe spreads unfold to present the muscular, nervous, circulatory, and skeletal systems. Organs and other processes are each individually depicted: heart and lungs, digestive system, head and brain, ears, hands, feet, bones, and body hair, as well as the reproductive system and the changes from conception to pregnancy.