Acidic chyme splashes into the esophagus, causing a burning pain commonly called heartburn or acid indigestion. This happens when:
a. excess gastrin is present in the blood.
b. a sphincter does not close properly.
c. the stomach is full.
d. the chyme is too acidic.
e. cells lining the esophagus release acid.
b
Biology & Microbiology
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