How are the lungs designed in human beings to maximise the area for exchange of gases?
Asked by | 8th May, 2008, 07:53: PM
The interior of lungs are provided with many ballon like tiny structures called alveoli. These provide a surface where exchange of gases can take place. The walls of alveoli show an extensive network of blood vessels.
There are about 300 million alveoli in each lung. These alveoli maximise the area for exchange of gases.
Answered by | 12th May, 2008, 10:46: AM
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