Which body organ is primarily affected in a person with pulmonary disease?

The primary organ affected in a person with pulmonary disease is the lungs. Pulmonary diseases, such as chronic obstructive pulmonary disease (COPD), asthma, and pneumonia, directly impact the respiratory system, which is responsible for gas exchange—bringing in oxygen and expelling carbon dioxide. When the lungs are compromised, it can lead to a range of symptoms including difficulty breathing, reduced oxygen levels in the blood, and an increased risk of respiratory infections.

The other organs listed are not primarily impacted by pulmonary diseases. The brain may be indirectly affected due to the decreased oxygen supply, but it is not the primary organ involved. Similarly, the kidneys and stomach do not have a direct role in pulmonary function and are largely unaffected by lung-related issues. Understanding that the lungs are the central organ involved provides a clearer insight into the nature and effects of pulmonary diseases.