Stomach, Anterior View

Description

Framed within a semi-transparent thorax, the abdominal esophagus descends in the midline and passes through the esophageal hiatus of the diaphragm to join the stomach at the cardia. The stomach lies predominantly in the left upper quadrant, with the fundus positioned superiorly and to the left, the body sweeping inferomedially along the lesser curvature, and the greater curvature bowing laterally and inferiorly. Distally, the pyloric antrum narrows to the pyloric canal and pylorus at the rightward, inferior end of the organ, marking the gastroduodenal junction where gastric contents enter the first part of the duodenum. Rugae are visible along the gastric lumen, and the rib cage and vertebral column provide spatial reference posteriorly. Attention to the pylorus makes this view useful when teaching gastric outflow and the anatomical basis of gastric outlet obstruction. Hypertrophic pyloric stenosis is classically pediatric, but in adults the same region is frequently implicated by peptic ulcer disease with scarring, pyloric edema, or antral carcinoma causing delayed gastric emptying and nonbilious vomiting. The relationship of the stomach to the lower thoracic skeleton also supports orientation for endoscopic correlation, since the gastroesophageal junction and the antrum are key landmarks during EGD and during evaluation of hiatal hernia or reflux-related stricturing. A tight choke point. Use this plate in gross anatomy and GI physiology courses to anchor discussion of the cardia, fundus, body, and pyloric region in a realistic anterior topography, or in surgical and endoscopy teaching files that outline the target area for pyloroplasty, antrectomy margins, or duodenal bulb entry. Anatomical accuracy verified by SciePro's Medical Advisory Board.