How do we breathe?
Air takes the following path though our body:
· When we breathe in, air enters the body though the nose or mouth.
· Then it travels down a long tube called the trachea or windpipe.
· Next it continues though two pipes called the bronchi to the lungs.
· The lungs are the most important organs of the respiratory system. Here, oxygen passes from air into the blood.
· Finally, we breathe out to expel carbon dioxide.