1. Transport of Oxygen 3% in dissolved form i. e. dissolved in plasma.
97% bound to Haemoglobin

2. O2 Transport as dissolved in plasma
At Arterial Po2 = 0.29 ml of O2 dissolved in 100 ml of blood
At Venous Po2 = ml of O2 dissolved in 100 ml of blood
0.17 ml of O2 is carried in dissolved state to tissue by each 100 ml of blood

3. O2 transport as bound to Hb
1gm Hb can carry = 1.39 ml of O2. But due to impurities like met Hb 1gm Hb carries 1.34 ml of O2 15 gms will carry 1.34 x 15 = ml of O2 This happens at or more than 250 mmHg when Hb is 100% saturated. At arterial PO2 only 97% of Hb is saturated

4. O2 transport as bound to Hb
At arterial PO ml of O2 is bound to Hb. At venous PO ml of O2 is bound to Hb. 5 ml of O2 is transported as bound form from lungs to tissues by each 100 ml of blood.

5. O2 Hb dissociation curve

12. Factors affecting O2 Hb dissociation curve
CO Bohr effect
Hydrogen Ion
Temperature
BPG( Bisphosphoglycerate )
Electrolytes
Met Hb
HbF
Hormones