What is the GE junction?

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Multiple Choice

What is the GE junction?

The gastroesophageal junction is the boundary where the esophagus meets the stomach. It marks the transition from the esophageal mucosa, which is squamous, to the gastric mucosa, which is columnar. This junction, often represented by the Z-line on endoscopy, is where the lower esophageal sphincter sits to help prevent reflux. It is not the point where the stomach meets the duodenum (that occurs at the pylorus), nor the end of the ileum, nor the sphincter between stomach and small intestine (the pyloric sphincter).

The gastroesophageal junction is the boundary where the esophagus meets the stomach. It marks the transition from the esophageal mucosa, which is squamous, to the gastric mucosa, which is columnar. This junction, often represented by the Z-line on endoscopy, is where the lower esophageal sphincter sits to help prevent reflux. It is not the point where the stomach meets the duodenum (that occurs at the pylorus), nor the end of the ileum, nor the sphincter between stomach and small intestine (the pyloric sphincter).

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