Gas transport in the blood a Respiratory gases are transported in the blood in two forms Physical dissolution Chemical combination Alveoli Blood Tissue O2 dissolve-combine-dissolve7O2 cO2 dissolve← combine← dissolve←CO2Gas transport in the blood ◼ Respiratory gases are transported in the blood in two forms: – Physical dissolution – Chemical combination Alveoli Blood Tissue O2 →dissolve→combine→dissolve→ O2 CO2 ←dissolve←combine←dissolve← CO2