Cells tissues & organs

"Did you know that if all your blood vessels were laid out end-to-end they would stretch all the way around the world not just once but twice? Not only that--you are made up of millions of cells many miles worth of nerve fiber and more than 20 feet of intestine. The human body is a truly amazing machine capable of growth and self-repair. In this book you can find out all about your insides and how they work."--Provided by publisher.