What does “respiratory” relate to?

The term “respiratory” relates to the process of breathing and the organs involved in the exchange of oxygen and carbon dioxide. The respiratory system includes the nose, throat, trachea, lungs, and diaphragm. Its main function is to supply oxygen to the bloodstream and remove carbon dioxide from the body. Diseases that affect the respiratory system include asthma, pneumonia, chronic obstructive pulmonary disease (COPD), and lung infections. Maintaining respiratory health requires regular exercise, good air quality, and avoiding smoking. The respiratory system is vital for energy production and overall metabolic function in every living cell.