Lung- The Lungs are the most important and the main organ of the Respiratory System. It is the organ that takes in the Oxygen and puts out the Carbon Dioxide. The red blood cells take the oxygen from there to all the cells in the body that need oxygen to function. They also take the Carbon Dioxide and bring it back to the lungs which will then be exhaled.
Trachea- The Trachea is also a important part of the Respiratory System. It can also be referred to as the windpipe. It is the organ that filters all of the air we breathe in and then it branches off into the Bronchi.
Bronchi- Another main organ of the Respiratory System is the Brochi. It is two air tubes that come off the Trachea. This is a important part because it is what takes the air we breathe in, directly to the lungs.
Diaphragm- The last main organ is the Diaphragm. This is the main muscle and it is a dome shaped muscle which is located at the bottom of the lung. When air is breathed in, the Diaphragm contracts, which makes it flatten and pull downwards. This causes it to make the space where the lungs are in, larger. When it is larger, it pulls the air in. Then the Diaphragm expands which reduces the space for the lungs and pushes the air out.