while arterial o2 tension ( pao2 ) is dependent on pulmonary function ( except for intracardiac right-to-left shunt ) , the mass transfer of o2 ( vo2 ) between the cells and lungs depends on pulmonary blood flow ( i.e. , cardiac output ) and o2 concentration difference between the pulmonary arterial and pulmonary venous blood , c ( a-v ) o2 ( fick principle ) .
C0024109
lungs
C0034052
pulmonary