<prompt> Haemoglobin can bind to all the following exceptO2CO2SO2NO  <response>: Ans: c SO2 Ref.Ganong 22nd edp.667.Hb does not bind to SO2.Functions of Hb:-It facilitates 02 transportIt facilitates C02 transportIt has an important role as a bufferIt transports NO.Hemoglobin binds NO in the lungs and releases it in the tissues, where it promotes vasodilation.In arterial blood,Total volume of C02 - 49mldlAmount of C02 transported as HC03- 43.8mldl 90Amount of C02 transported as carbino compounds - 2.6mldl 5Amount of C02 in dissolved state - 2.6mldl 5Note:-1 gm Hb can carry 1.39ml of oxygen, when fully saturated. 1,34ml oxygen in vivo.1 gm Hb carries 3.34mg Iron in it.Oxygen entering the body per minute 250mlOxygen leaving the body per minute 200ml 288LdaypH of arterial blood 7.4 and pH of venous blood 7.36.Haematocrit of venous blood increase by 3.Chloride shift takes about 1 second to occur. 