Understanding Acid Reflux: Anatomy and Mechanism of GERD #3750794 (License: Personal Use)

The image illustrates a sagittal view of the human upper digestive system, highlighting the esophagus, lower esophageal sphincter, and stomach. Orange bubbles represent acidic contents refluxing upward due to sphincter dysfunction, causing irritation and symptoms like heartburn. The blue shaded area in the mouth suggests regurgitation or sour taste associated with severe reflux.

Used on medical education pages, gastroenterology websites, or patient resources explaining GERD pathophysiology; targets users searching for “how acid reflux works” or “GERD anatomy.”