Which of these is demonstrated by the oxygen-hemoglobin dissociation curve?
A. More additional oxygen binds to hemoglobin when going from a PO₂ of 60 to 80 mm Hg, than is added when going from a PO₂ of 20 to 40 mmHg.
B. At normal resting systemic arterial PO₂, hemoglobin is almost 100% saturated with oxygen.
C. The greater the PO₂ of the blood, the greater the dissociation of O₂ from hemoglobin.
D. At normal resting systemic venous PO₂, only about 75% of the hemoglobin is in the form of deoxyhemoglobin.
E. As PO₂ increases, the saturation of hemoglobin with oxygen increases linearly.
