الــي يعـــرف الانجــليزي يــدخــل ( بلــيز).. بسرعـة

هذا الموقع بيساعدك ويعطيكي معلومات في كتابة اي موضوع تدورين عليه .... انا استفدت منه كثير في تخصصي الانجليزي لما كنت ادرس..

www.answers.com

وأي سؤال راسليني

اتمنى لك التوفيق...

شكـــــــــــــرا لــــــــــك

الله يعطـــيك الــــعافية
.

The human stomach is located beneath the diaphragm, through which the posterior, terminal end of the esophagus passes. The stomach appears as a dilated tube continuous with the distal end of the esophagus. The upper curvature of the stomach is usually above and to the left of the esophageal orifice. This expanded anterior portion is the fundus and is commonly filled with air or gas. The body (corpus) of the stomach is directed toward the attenuated right extremity or pyloric region and is subject to variations in size and shape, depending upon functional activities, habits, disease, and volume of the contents. The pyloric walls are marked by the heavy sphincter muscle which controls the passage of chyme (a semiliquid fluid produced by the mechanical and chemical changes of preliminary digestion) into the duodenum.

The stomach of vertebrates is lined by a mucous membrane that is usually thrown into longitudinal folds called rugae. Most of the surface is covered with mucus-secreting epithelial cells, but scattered throughout the lining are many small glandular pits which are lined with one or more types of secretory cells.

ان شاء الله يفيدك