The respiratory system is responsible for the exchange of gases in the body, specifically oxygen and carbon dioxide. It includes the nose, pharynx, larynx, trachea, bronchi, and lungs.
Within the lungs, oxygen from inhaled air is transferred to the bloodstream, while carbon dioxide is removed from the blood and exhaled out of the body. This process occurs in tiny air sacs called alveoli.
Common respiratory conditions include asthma, chronic obstructive pulmonary disease (COPD), pneumonia, and bronchitis. Smoking, air pollution, and infections can contribute to these disorders.