MCQ IN MEDICINE

Detailed explanation-1: -Pneumonia is an infection that affects one or both lungs. It causes the air sacs, or alveoli, of the lungs to fill up with fluid or pus.

Detailed explanation-2: -Pneumonia is an acute inflammatory response deep in the lungs, in the alveoli. When a tissue is infected or injured, there is an inflammatory response that is, in the simplest sense, an accumulation of pus. When the deep lungs are injured or infected, pus accumulates there. Pus in the alveoli is pneumonia.

Detailed explanation-3: -Bacteria. The most common type of bacterial pneumonia is called pneumococcal pneumonia. Pneumococcal pneumonia is caused by the Streptococcus pneumoniae germ that normally lives in the upper respiratory tract. It infects over 900, 000 Americans every year.