Title: Respiratory system
Description: "Did you know that the average surface area of an adult's lungs is about 750 square feet (70 square meters)? The average adult takes 12 to 20 breaths per minute at rest. Discover more fascinating facts in How the Human Body Works - The Respiratory System. This series guides readers through the fascinating inner workings of the human body. The human body contains several complex systems that work closely together to support life and allow the body to function properly. Each book explores the characteristics and interactions of these systems, their makeup, and their importance"--
Subjects: Respiratory organs, Juvenile literature, Respiration, Respiration, juvenile literature, Anatomy, Respiratory organs, juvenile literature