The human lungs contain approximately 2,400 kilometers (1,500 mi) of airways and 300 to 500 million hollow cavities, having a total surface area of about 70 square meters, roughly the same area as one side of a tennis court. Furthermore, if all of the capillaries that surround the lung cavities were unwound and laid end to end, they would extend for about 992 kilometers. Also, your left lung is smaller than your right lung to make room for your heart.
Posted on: Sat, 22 Mar 2014 14:26:22 +0000
Trending Topics
Recently Viewed Topics
© 2015