The Macmillan Book of the Human Body Author:Mary Elting, Kirk Moldoff Did you know there are 60,000 miles of blood vessels in the average adult? Over 10,000taste buds in your mouth? By the time you are 75, you will have spent almost 25 years asleep! The Macmillan Book of the Human Body is packed with amazing facts and intriguing descriptions, allowing you to see and better understand what takes place inside your b... more »ody.« less