Did you know that there are about 60000 miles 95500 kilometres of blood vessels in the human body? More than half of the body's blood is made of a substance called plasma.
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. AV2 media enhanced.