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Esophageal hiatus

Other Terms: Esophageal hiatus of diaphragm, Oesophageal aperture, Oesophageal hiatus, Hiatus oesophageus, Hiatus oesophagien

Description

The esophageal hiatus is the passageway of the esophagus through the diaphragm. It is formed by the medial fibers of the right crus of the diaphragm as they arch across to the left side of the midline. They form a tubular envelope around the esophagus with an elliptical opening. The elastic fascia on the undersurface of the diaphragm projects upward through the opening and inserts deep into the wall of the esophagus. This fascial arrangement allows for flexible movement between the esophagus and diaphragm and impedes upward displacement of the esophagus.

Latin

Hiatus oesophageus

French

Hiatus oesophagien

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