Bicarbonate is secreted into the interstitial fluid by gastric epithelial cells to protect the stomach lining from acidic damage. It is also secreted into the lumen by pancreatic duct cells to neutralize the acidic chyme entering the small intestine from the stomach, facilitating digestion.

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Bicarbonate Is

Question 43

Multiple Choice

Bicarbonate is

A) secreted into the lumen by gastric epithelial cells and into the interstitial fluid by pancreatic duct cells.
B) secreted into the lumen by pancreatic acinar (exocrine) cells,and into the interstitial fluid by pancreatic duct cells.
C) secreted into the lumen by pancreatic duct cells,and into the interstitial fluid by pancreatic acinar (exocrine) cells.
D) secreted into the interstitial fluid by gastric epithelial cells,and into the lumen by pancreatic duct cells.
E) secreted into the lumen by both gastric epithelial cells and pancreatic duct cells.

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