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How do we respire??? explain the process

Asked by Kartik Duseja , on 20/4/13

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  Inhalation-when the muscles attached to ribs contract &  diaphragm contract chest cavity expands .Thus increases the capicity to hold oxygen.Here volume increases but preassure decreases ,so air moves in.

       When the oxygen is transported in blood &the carbon-di-oxide gets out of the deoxygenated blood the pressure in the lung increase.

Exahalation -similarly, when chest cavity contracts leads to moving out of carbon di oxide..

        And this cycle contniues...........

Posted by Swastik Dabralon 20/4/13

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