Protection for the interior surface of the stomach against the acids and enzymes in the gastric lumen is afforded by
A) the shallow depressions called gastric pits.
B) the carpet of mucus secreted by the columnar epithelium lining all portions of the stomach.
C) the rapid rate of mechanical mixing of the stomach contents, which exposes the lining to chyme for only a short time.
D) the esophageal sphincter.
E) None of the answers are correct.
Correct Answer:
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