abdominal part of esophagus

abdominal esophagus

Clinical esophageal segment composed of smooth muscle. It corresponds to the inferior part of the lower third topographic segment of the esophagus.

種類 Muscle
親構造 subdivision of tube
ラテン語名 abdominal esophagus
FMA ID 9397

よくある質問

What is the abdominal part of esophagus?
The abdominal part of esophagus (abdominal esophagus) is the short terminal segment of the esophagus that lies within the abdominal cavity, below the diaphragm and above the stomach. It is composed of smooth muscle and represents the inferior portion of the esophagus's lower third.
Where is the abdominal part of esophagus located?
The abdominal part of the esophagus extends from the esophageal hiatus of the diaphragm down to the gastroesophageal junction (where the esophagus meets the stomach). This segment is typically only a few centimeters long and lies in the upper abdomen.
What is the function of the abdominal part of esophagus?
This segment transports swallowed food from the thoracic esophagus into the stomach. It contains the lower esophageal sphincter region, which is critical for preventing the reflux of gastric acid back into the esophagus.
What conditions can affect the abdominal part of esophagus?
The abdominal esophagus is a key site of pathology in gastroesophageal reflux disease (GERD), hiatal hernia, and achalasia (failure of the lower esophageal sphincter to relax). Barrett's esophagus — a precancerous condition — can develop in this region due to chronic acid exposure.
How is the abdominal part of esophagus different from the thoracic esophagus?
While the thoracic esophagus passes through the mediastinum of the chest, the abdominal segment enters the peritoneal cavity. The abdominal portion is short and associated with the lower esophageal sphincter mechanism, making it clinically significant in reflux pathology.

関連構造

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This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.