The approximate percent of O₂ saturation of hemoglobin in blood vessels returning from liver cells when the concentration of glucagon in the blood is high versus low is 10% when glucagon is high and 75% when low.
High glucagon levels causes blood pH to become slightly acidic, and the acidic pH curve (due to high glucagon) enters at 10% of O₂ hemoglobin saturation will be found in blood vessels. Whereas at low glucagon levels i.e. pH 7.4 is incorporated at 75% of O₂ hemoglobin saturation present in blood.
Glucagon breaks down glycogen in the liver to glucose and enables blood glucose to reach cells.
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