The main function of our lung is to exchange the gases between the air we breathe and our blood. It is through our lung that carbon dioxide is emptied from our body and oxygen is transported to our blood vessels. It is not widely known that the two sides of our lung are not identical to each other. The right lung has three lobes, whereas the left lung has two lobes, and an additional portion which is called the lingula which is like the middle lobe.

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