How are the lungs designed in human beings to maximize the area for exchange of gases? (CBSE 2010)
The structure of the lung can be described as follow:
Each lung receives bronchi which divide into bronchioles. These bronchioles further end with a large number of alveoli.
These alveoli are small, round balloon-like structure, that is further connected with veins and arteries.
These alveoli because of balloon-like structure provide a larger surface area and occupy very less volume.
Hence they provide a larger surface thus maximizing the surface area for the exchange of gases inside the lungs.
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