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The Anatomy and Physiology of the Stomach. Ian R. Daniels and William H. Allum. Aims. To detail the anatomy and physiology of the stomach. Introduction. The stomach is the most dilated part of the digestive tube, having a capacity of 1000–1500 ml in the adult.
The stomach, located in the upper left quadrant of the abdomen, is a J-shaped organ composed predominantly of invol-untary smooth muscle. A bolus of food enters the stomach through the lower oesophageal sphincter, which rapidly closes to prevent regurgitation of gastric secretions (see part 1).
This article describes in detail the surgically relevant topographical anatomy of the stomach, including its blood supply and lymphatic drainage. The stomach lies largely in the left hypochondrial region under cover of the lower part of the rib cage.
Anatomy of the stomach. Landmarks. Topographically, the stomach has five regions (Fig. 1): (1) the cardia and gastroesophageal (GE) junction, (2) the fundus, (3) the corpus, (4) the antrum, and (5) the pylorus.
11 wrz 2023 · The four main sections of the stomach are the cardia, fundus, body, and pyloric part. As the name implies, the cardia surrounds the cardiac orifice, which is the opening between the esophagus and the stomach. It is the first section that ingested food passes through, representing the inflow part.
The stomach is lined by simple columnar epithelium. This simple columnar epithelium begins Abruptly at the gastro-esophageal junction (GEJ). GP = gastric pit. CG = cardiac glands. Endoscopic difference between the Esophageal and Gastric mucosa. Esophagus. GE Junction. Stomach. The epithelium invaginates the lamina propria to form. Gastric Pits.
The stomach is divided into four segments that are important guides when planning a surgical resection: (1) the cardia , (2) the fundus , (3) the corpus or body , and (4) the antrum (Fig. 3.1).
