Anatomy
Dilated part/organ of alimentary tract, left upper quadrant abdomen, shape of reversed C (concave part – lesser curvature, convex – greater), capacity 1- 3L, connecting esophagus and small intestine, under diaphragm (first part of tract in abdomen), receives bolus (masticated food) through esophageal sphincter, secretes enzymes (proteases such as pepsin) and acid (HCl) and churns food through segmental contractions (absorbs some H2O, alcohol, ions, drugs such as aspirin), passes it on (after c. 1-3 hours) as chyme (pH2) to duodenum through sphincter of pylorus; parts (proximal to distal) – cardia, fundus, body, pyloric antrum, pyloric canal; right/left gastric arteries supply lesser curvature and cardia, r/l gastroepiploics supply greater, short gastric (from splenic) supplies fundus.
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