Lung has one pair that is right lung and left lung. The right lung consists of three lobes, while the left lung consists of two lobes. Right lung ang left lung is covered by lung cover membrane called pleura. Between pleura and lung is found lymphatic liquid that has function to protect lung from friction when developing and collapsing
In the lung is found alveolus that its amount is so many. In human is found about 300 billion of alveoli
