The stomach, part of the gastrointestinal tract, is a digestive organ located between the esophagus and the duodenum.
It has a 'J' shape, and features a lesser and greater curvature. The anterior and posterior surfaces are smoothly rounded with a peritoneal covering.
The greater curvature forms the long, convex, lateral border of the stomach. Arising at the cardiac orifice, it arches backwards and passes inferiorly to the left. It curves to the right as it continues medially to reach the pyloric antrum (opening to the pylorus).
The greater curvature is found on the lateral side of the stomach. The lesser curvature is on the medial side.
The fundus is the bulge of the greater curvature of the stomach superior to the esophageal junction.
peritoneal membrane
The stomach has a greater and lesser curvature. The greater curvature is the more lateral of the two.
Greater Omentum
The attachments of the greater omentum are: # The Dorsal Abdominal Wall # The Greater Curvature of the Stomach
The greater omentum
The greater omentum is located in the stomach. It is like an apron that extends from the greater curvature of the stomach to the transverse colon. Its purpose is for fat deposition, immune contribution, and infection and wound isolation. The lesser omentum, on the other hand, extends from the liver to the lesser curvature of the stomach. There is no known function of the lesser omentum.
Greater Omentum
Curvatures of the stomach:Lesser Curvature forms the right border of stomach, which extends from cardiac orifice to the pylorus. The lesser omentum is attached to lesser curvature and the liver. The lesser omentum forms the anterior boundary of the omental foramen and contains hepatic artery, portal vein and bile duct within its lower border.Greater Curvature extends from left of cardiac orifice, over dome of fundus, and along left border of stomach to the pylorus.The gastrosplenic ligament attaches to the upper part of the greater curvature and the greater omentum attaches to its lower part.
There is no anatomical sphincter present at junction between stomach and esophagus. The angle formed by greater curvature of stomach demarcates the two organs.
Clinically, it is true that gastric ulcer is more common along the lesser curvature and less common along the greater curvature. To elucidate this difference in ulcerognesis, two experimental ulcers were prepared in dogs at the sites, one at the angular incisure and the other at the corresponding greater curvature after the method by Hatafuku & Thal in japan. The cause for this may be explained by the increased motility with repeated ischemic condition at the lesser curvature.
The structure attached to the lesser curvature of the stomach is a mesentery called the lesser omentum. this receives bile from the liver and sends it to the stomach.