Hemoglobin: a gamechanger

The supply of oxygen (O2) is crucial for life and there are two ways O2 can be carried in blood: dissolved or combined with hemoglobin. Dissolved O2 can only supply a fraction of what the human body needs. One mL blood holds only about 0.003 mL O2 at a partial pressure of oxygen (PO2) of … Continue reading Hemoglobin: a gamechanger