Why doesn't the stomach digest itself?
A. Stem cells in gastric glands constantly replace dead epithelial cells of the mucosa.
B. Mucosal epithelial cells are exceptionally long-lived.
C. Parietal cells secrete a thick mucus that protects the mucosa.
D. Excess stomach acid is regurgitated.
E. Gastrin stimulates production of mucus.
A. Stem cells in gastric glands constantly replace dead epithelial cells of the mucosa.
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