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| Description: The outermost layer, the serosa, is connective tissue covered by epithelium. Beneath the serosa, three layers of smooth muscle differ in their orientation and direction of contraction. Their coordinated action mixes stomach contents with gastric fluid secreted by the mucosa that lines the stomach’s interior. The folds shown on the inner surface become smoothed out when the stomach fills with food. gastroesophageal sphincter 881'088 longitudinal muscle circular muscle oquue muscle submucosa small Intestine mucosa Picture Stats: Views: 108 Filesize: 186.55kB Height: 1147 Width: 1500 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=47454 |