Regurgitation of food from the stomach into the esophagus:
A) is ordinarily inhibited by the upper esophageal sphincter.
B) causes irritation of the esophageal mucosa.
C) is called retropulsion, and is essential for gastric digestion.
D) is ordinarily prevented by the pyloric sphincter.
E) is called secondary peristalsis.
Correct Answer:
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