State the different modes of CO2 transport in blood.
Around 75% of the CO2 is transported via blood and the remaining 25 % of it is transported via plasma.The three main ways by which CO2 is transported in blood are:
1. In Red blood cells carbon dioxide combines with water and forms carbonic acid. It is an unstable form and gets disassociated into hydrogen and bicarbonate ion.
2. Carbon dioxide is also transported through plasma in the form of bicarbonate ions.