stomach

(stum’ak) (L. stom’ach us: Gr. oropaxos). The ovoid, musculomembranous digestive pouch below the esophagus. The end which connects with the esophagus is the cardiac end, and that nearest the pylorus is the pyloric end, or pylorus. The upper concave surface or edge is the le er curtature; the lower convex edge is the ereater curtature. The coats of the stomach are four: An outer, peritoneal, or serous coat; a muscular coat, made up of longitudinal, oblique, and circular fibers (the latter forming a pyloric sphincter); a submucous coat lined with a muscular layer, the muscular is mucosa; and the mucous coat or membrane forming the inner lining. The secretion of the stomach is the gastric juice, which contains pepsin, rennin, hydrochloric acid, etc. Dbilocular s., hour-gla stomach. s.-bucket, a small bucket for lowering into the stomach and withdrawing some of its contents for examination. 8., the fundus of the stomach. corset-s., a dis- 59