This 3D animation Video shows gastric bypass (stomach stapling) surgery where a small portion of the upper stomach Will attached directly to the small bowel, effectively making the stomach and a one ounce receptacle for food. The remainder of the stomach and duodenum are attached further down the small intestine so that stomach and liver secretions can drain into the GI tract.
![](https://i.ytimg.com/vi/CJNrZJ4d1Wc/mqdefault.jpg)