The name for the air that remains in lungs after a relaxed expiration is the A. Vital capacity B. Residual volume C. Tidal volume D. Functional residual capacity E. Reserve volume 59. Choose the true statement below about hemoglobin. A. An increase in 2,3-Bisphosphoglycerate causes a reduced affinity of Hemoglobin for Oxygen. B. The hemoglobin saturation in systemic arterial blood is 75%. C. The normal value for PaO2 in systemic veins is 46 mmHg. D. Adult hemoglobin contains two Alpha and two Gamma chains. E. The heme group in hemoglobin is converted into unconjugated bilirubin by the liver and bone marrow.