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Respiratory Study Guide
Hemoglobin Affinity
Hemoglobin (Hb) affinity to O2 is measured on a dissociation curve.
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A shift to the right and Hb affinity decreases
- é H+
- é CO2
- é Temperature
A shift to the left and Hb affinity increases
- pregnancy
- long term high-altitudes
- organisms that live in deep water
CO2 is converted to bicarbonate ions
CO2 + H2O « H2CO3 « H+ + HCO3-
carbon dioxide + water « carbonic acid « hydrogen ion + bicarbonate ion