Where does the bicarbonate secreted by the pancreas come from?

Question

Quizplus · Accepted Answer

The bicarbonate secreted by the pancreas originates from CO2 in the blood. Carbon dioxide diffuses into the pancreatic cells, where it reacts with water in the presence of the enzyme carbonic anhydrase to form carbonic acid, which then dissociates into bicarbonate and hydrogen ions. The bicarbonate is then secreted into the pancreatic duct, helping to neutralize stomach acid in the small intestine.

Where Does the Bicarbonate Secreted by the Pancreas Come From