What part of the body is primarily affected during pneumonia?

Pneumonia primarily affects the lungs, a critical component of the respiratory system. It is an infection that leads to inflammation of the air sacs in one or both lungs, which can fill with fluid or pus, making it difficult for the oxygen to pass into the bloodstream. The symptoms include cough, fever, chills, and difficulty breathing, all of which relate directly to lung function.

The other organs mentioned, such as the stomach, kidneys, and heart, are not directly impacted by pneumonia. While infections can potentially have systemic effects that may influence other body systems, pneumonia itself is specifically classified as a lung disease. Hence, understanding that pneumonia directly pertains to lung infections helps clarify the nature of this disease and distinguishes it from conditions affecting other organ systems.