Keywords
rat, stomach, ontogenesis, mucous membrane, submucosa, muscular membrane, glandular stomach, non-glandular stomach, late postnatal
Abstract
Continuity of smooth muscle bundles of the stomach and esophagus, absent in rats. The continuity of the smooth muscle bundles of the stomach and esophagus is absent in rats. Circular muscle bundles run around the circumference of the stomach, forming a cap of parallel muscle bundles at the bottom.Small muscle bundles connect circular muscle bundles. The oblique muscle fused and became continuous with the orbicularis muscle near the gastroesophageal junction at the base of the fundus and in the body lateral to the lesser curvature. Structural and functional changes in the gastric mucosa are clearly seen in different age periods.