Main Article Content
The study current included histological structure of stomach of Liza abu , anatomical results found that stomach represent the expander non-convoluted part of gastrointestinal tract it is located between the end of the esophagus and the beginning of the intestine , the average length of stomach was (1.5) cm , composed of two parts : cardiac stomach which is represent the anterior part and be thin- walled , the other part was pyloric stomach or gizzard and the walls were thick . The internal surface of cardiac and pyloric stomach contain longitudinal folds numbering (7), folds branching to finger shape structures extend inside the lumen . Histological study showed that stomach wall composed of three main histological layers : mucosa , sub mucosa , muscularis and externa serosa , the epithelial tissue that lining stomach was simple columnar with thickness of (15)Î¼ and (13)Î¼. In cardiac and pyloric stomach respectively. Lamina propria of cardiac stomach contain tubular gastric glands , pyloric part do not contain gastric glands at all sub mucosa was dense connective tissue extend from mucosa to muscularis externa with thickness of (49)Î¼ and (84)Î¼ in cardiac and pyloric stomach respectively. Layer with muscularis externa composed of smooth muscle fibers arranged in two layers : internal circular thickness of (288.7)Î¼ and (1666)Î¼ in cardiac and pyloric stomach respectively and external longitudinal layer with thickness of (157.5)Î¼ and (31)Î¼. In cardiac and pyloric stomach, serosa was a thin layer of loose connective tissue surrounding by squamous epithelial cells with a thicknessof (10.5)Î¼ .