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Lecture 23 12-02-10

Even though o2 affinity is decreased by the right

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Unformatted text preview: h PO2. Even though O2 affinity is decreased by the right shift in systemic capillaries, hemoglobin can be fully saturated in the lungs. How the Right-Shift Affects the Unloading of Oxygen How Oxygen Affinity of Hemoglobin Versus Body Size Oxygen 50% Saturation 50% P50 Hb > P50 Mb Mb has higher O2 affinity than Hb P50 of hemoglobin Carbon Dioxide Transport Carbon Effect of Oxygen on Carbon Dioxide Transport: Haldane Effect Dioxide Oxygen decreases affinity of hemoglobin for carbon dioxide Summary of Oxygen Unloading and Summary Carbon Dioxide Loading in Tissue Respiratory System in Acid-Base Balance Acid Hemoglobin functions as a buffer H+ + HbO2 O2 + Hb + H+ HbH Bicarbonate buffer system CO2 + H2O H2CO3 H+ + HCO3- Blood pH = 6.1 +...
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