Multiple Choice
Heartburn is caused by the ____.
A) gastroesophageal sphincter remaining too tightly closed
B) gastroesophageal sphincter remaining a bit open
C) pyloric sphincter remaining too tightly closed
D) pyloric sphincter remaining a bit open
E) the gastroesophageal and the pyloric sphincters remaining too tightly closed
Correct Answer:
Verified
Correct Answer:
Verified
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