Which of these is demonstrated by the oxygen-hemoglobin dissociation curve?
A. The greater the PO2 of the blood, the greater the dissociation of O2 from hemoglobin.
B. At normal resting systemic arterial PO2 , hemoglobin is almost 100% saturated with oxygen.
C. At normal resting systemic venous PO2 , only about 75% of the hemoglobin is in the form of deoxyhemoglobin.
D. More additional oxygen binds to hemoglobin when going from a PO2 of 60 to 100 mmHg, than is added when going from a PO2 of 40 to 60 mmHg.
E. As PO2 increases, the saturation of hemoglobin with oxygen increases linearly.
B
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