The term "respiratory" refers to anything related to the process of breathing and the organs involved in it. This includes the lungs, trachea, and bronchi, which work together to take in oxygen and expel carbon dioxide. The respiratory system is essential for providing the body with the oxygen it needs to function and for removing waste gases. When we breathe, air enters through our nose or mouth and travels down the trachea into the lungs. Here, oxygen is exchanged for carbon dioxide in tiny air sacs called alveoli. This process is vital for our survival, as it helps maintain the balance of gases in our blood and supports overall health.