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XY-QH3329-1 Human stomach model 1. Model useThis model can be used as an intuitive teaching aid to explain the structure of human stomach. Second, model structure The stomach is a muscular sac. When empty, the stomach is divided into anterior and posterior walls and upper and lower edges. The upper margin is short and concave, and the lower margin is long and convex, and the stomach is large. The entrance where the stomach meets the esophagus is called the cardia; The outlet connecting the duodenum is called the pylorus. The part between the angular notch and the pylorus is called the pylorus; The pyloric part and the pylorus are narrowed into a tubular part called the pyloric canal, and the slightly enlarged part of the pyloric canal and the angular notch is called the pyloric sinus. On the left side of the cardia, the part of the stomach wall that protrudes above the left is called the fundus; The middle part of the stomach is called the stomach body. The stomach body was cut into the anterior and posterior walls from the esophagus to the pylorus, and the posterior wall retained the serous membrane. The minor gastric curvature shows the left and right gastric arteries, and the greater gastric curvature shows the gastroepiploic arteries. The anterior wall shows the longitudinal muscle of the outer layer, the annular muscle of the middle layer, and the oblique fiber of the inner layer. The inner wall showing many folds is the mucosal layer. |
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