Which of the following 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

Question

Quizplus · Accepted Answer

Heartburn is usually caused by backflow of chyme from the stomach into the esophagus, which can irritate the lining of the esophagus and cause a burning sensation.

Which of the Following Is the Usual Cause of Heartburn