Facts About the Respiratory System

   Your right lung is bigger than your left lung.

   There is an average of 480,000,000 alveoli in each lung of an adult.

   The breathing rate in men is slower than in women and children.

   The surface area of the membranes in your lungs involved in gas
     exchange is around the size of a tennis court.

   You lose two cups of water a day from breathing.

   A muscle under your lungs, called the diaphragm, helps your lungs inflate and deflate.

   In 1910, August Krogh demonstrated that oxygen is delivered to your tissues from your blood when it diffuses
     from an area of high concentration to an area of low concentration.