Stomach
The stomach is a pouch of muscle that is attached to the esophagus at the cardiac sphincter. In the above pictures, you can see the probe pointing to the stomach (left) and a view of the stomach walls after the stomach has been cut open (right). The stomach walls have small folds called rugae, the folded nature of the stomach allows it to expand when necessary. On the picture to the left, the red arrow is pointing to the pyloric sphincter, where the stomach empties its contents to reach the small intestine, and the black circle represents the pylorus, or the portion of the stomach that connects to the duodenum of the small intestine.
The above picture shows the curvatures of the stomach. The "curvatures" here are much less pronounced because the stomach has been flattened. The black line is the greater curvature of the stomach, with the red line representing the lesser curvature of the stomach. The blue region represents the fundus region of the stomach, which is superior to the cardiac sphincter. It is hard to visualize this region from the picture, because the stomach is flat, but the circle region would fold above the cardiac sphincter, making it the pylorus region.
Omentum, which are folds of fatty peritoneum that hang above the stomach from the abdominal wall, are present in many animals including humans. There are generally two folds, the greater and lesser omentum. However, fetal pigs do not have any omentum in their body.
Omentum, which are folds of fatty peritoneum that hang above the stomach from the abdominal wall, are present in many animals including humans. There are generally two folds, the greater and lesser omentum. However, fetal pigs do not have any omentum in their body.