If it were possible to shrink down and take a tour of a human body, would you want to go? Readers will get that chance when they explore the body of a guy named Marty, who will let them check out the body systems that keep his heart beating and his body moving every day. With the help of a tiny ship that goes through his ears and all the way through his digestive system, readers will learn exactly what they are made of with this great book.

Emprende un fascinante viaje al interior del cuerpo humano y descubre un montón de datos interesantes sobre la máquina más asombrosa del universo.