pneumonia directly affects which part of the body
Pneumonia Pneumonia is an inflammatory condition of the lung affecting primarily the small air sacs known as alveoli.[4][13] Typically symptoms include some combination of productive or dry cough, chest pain, fever, and trouble breathing.[2] Severity is variable.[2]
Respiratory epithelium Respiratory epithelium is a type of ciliated epithelium found lining most of the respiratory tract, where it serves to moisten and protect the airways. It is not present in the larynx and pharynx. It also functions as a barrier to potential pathogens and foreign particles, preventing infection and tissue injury by the action of mucociliary clearance.