Summary: and decreases with altitude Hemoglobin has a high affinity for oxygen and 98 5 of O2 is carried in the bloodstream as oxyhemoglobin HbO2 The remaining 1 5 is dissolved in the plasma Be able to explain the significance of saturation levels of oxygen in the blood What are the Bohr effect and reverse Bohr effect and how do changes in CO2 levels pH and temperature
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