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What Is the Usual Cause of Heartburn

Question 7

Multiple Choice

What is the usual cause of heartburn?


A) backflow of chyme from the stomach into the esophagus
B) retention of food at the bottom of the esophagus by a sphincter that is reluctant to open
C) irritation of the lower esophagus by substances in spicy food
D) compression of the lower esophagus by an overfilled stomach

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