![The diagram illustrates the healthy trachea and air sacs of the human lungs highlighted with black lines for easy viewing. 8288533 Vector Art at Vecteezy The diagram illustrates the healthy trachea and air sacs of the human lungs highlighted with black lines for easy viewing. 8288533 Vector Art at Vecteezy](https://static.vecteezy.com/system/resources/previews/008/288/533/original/the-diagram-illustrates-the-healthy-trachea-and-air-sacs-of-the-human-lungs-highlighted-with-black-lines-for-easy-viewing-vector.jpg)
The diagram illustrates the healthy trachea and air sacs of the human lungs highlighted with black lines for easy viewing. 8288533 Vector Art at Vecteezy
Mayo Clinic - Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm
![Vecteur Stock Diagram the pulmonary alveolus (air sacs) in the lung. The respiratory system lungs with detail of bronchioles and alveoli with capillary network. Alveoli structure Anatomy | Adobe Stock Vecteur Stock Diagram the pulmonary alveolus (air sacs) in the lung. The respiratory system lungs with detail of bronchioles and alveoli with capillary network. Alveoli structure Anatomy | Adobe Stock](https://t4.ftcdn.net/jpg/01/51/79/31/360_F_151793189_WrzqL1tNBvV87w5RRCUixtRtwYWaYgpu.jpg)