In some cases of pneumonia, which parts of the body turn from gray to bluish in color?

When the oxygen supply to the tissue is inadequate,the condition is known as:

Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls.

The allergic reaction in the lungs caused by allergens entering the body through respiration is known as:

In heavy smokers,the alveoli of the lungs are enlarged and damaged,which reduces the surface area for the exchange of respiratory gases. This condition is called:

Which of the following is a bacterial disease of the respiratory system?