Human Stomach's Anatomical Morphology

Description

Stomach morphology is centered on the sweeping greater curvature, which arcs inferiorly and to the left from the gastroesophageal junction toward the pyloric region. The distal esophagus enters at the cardia on the superior aspect, while the pylorus narrows distally to meet the first part of the duodenum at the pyloroduodenal junction. Along the concave medial border, the lesser curvature runs from cardia to pylorus, separating the anterior and posterior gastric surfaces and framing the fundus superiorly and the gastric body and antrum inferiorly. Orientation is fixed on the external contour and luminal continuity. Gastroenterologists and surgeons care about these landmarks because disease and operative planning track the same borders: peptic ulcers cluster along the lesser curvature and prepyloric antrum, and gastric carcinoma often spreads along lymphatic channels that follow the curvatures toward the left and right gastric and gastro-omental arcades. Bariatric procedures (sleeve gastrectomy, Roux-en-Y gastric bypass) reference the greater curvature, incisura angularis, and pylorus when defining resection lines and anastomotic sites, and a precise sense of the esophagogastric junction helps explain hiatal hernia and reflux patterns. Surface anatomy matters. The emphasis on outer contour makes it easy to teach how gastric distension changes relationships to the left lobe of liver, spleen, and transverse colon without losing the key junctions to esophagus and duodenum. Use this illustration in gross anatomy and gastrointestinal modules to anchor terminology (cardia, fundus, corpus, antrum, pylorus) before moving into vascular supply or peritoneal attachments such as the greater omentum. It also supports figures for endoscopy orientation, ulcer location diagrams, and surgical consent materials that need accurate curvature-based localization. Anatomical accuracy verified by SciePro's Medical Advisory Board.