What does it mean when the concentration of dissolved oxygen in blood is 100 mmHg? A. the oxygen dissolved in blood exerts a pressure of 100 mmHg over and above the blood pressure generated by the heart. B. 100 mmHg of the blood pressure, is due to the dissolved oxygen within it. C. the blood had been exposed to air in the lungs that contained oxygen at a partial pressure of 100 mmHg. D. the dissolved oxygen exerts an osmotic pressure of 100 mmHg.
Option C. This means the blood had been exposed to air in the lungs that contained oxygen at a partial pressure of 100 mmHg.