
The lung’s a magnificent organ that perform a multitude of vital
functions every other of our lives. Breathing is the most essential of
these functions. With each breath, the lungs take in oxygen and take
away carbon dioxide. The air we respire enters the lungs via the main
windpipe. which branches into two main tubes supplying the left and
right lung, respectively. These tubes progressively branch 21 additional
times to form more than 1,00000 minor tubes and more than 300 million
air sac, which are only about 0.4 mm in diameter. Thus the surface area
of the lungs is huge
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