Kartik Duseja , asked a question
Subject: Science , asked on 20/4/13

How do we respire??? explain the process

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Dr Saman Ahmad , Meritnation Expert added an answer, on 22/4/13

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Swastik Dabral , added an answer, on 20/4/13
10 helpful votes in Science

  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...........

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