Digestion Duodenal

Digestion Duodenal

The duodenal (duodenal) system is a complex set of interconnected organs that are involved in the digestion and assimilation of nutrients, and also protect the gastrointestinal tract from infections.

The duodenum is the first section of the digestive tract in most animals. It begins behind the bend of the jejunum and ends at the level of the ligamentous opening between the esophagus and the stomach. In humans, it is about 25 cm long and occupies the middle part of the abdominal cavity; its lateral walls are covered with peritoneum and Wolff's fascia. From the outside towards the chest, the duodenum is covered by the pancreas, transverse colon and right flexure of the stomach. On it lie the branches of the celiac trunk, which lies on the right. The vessels and nerves of the intestine are located under the peritoneum on the transverse colon. Outside the intestine are the ureters and the serous membrane of the retroperitoneum. Below the lesser omentum is the first flexure of the duodenum. Its outer layers are covered by the gallbladder and the upper surface of the posterior pancreas. The outflow of bile from the gallbladder into the duodenum occurs through the cystic duct and cystic duct vessel. They pass through the ring of oblique ligaments lying at the confluence of the gallbladder into the intestine, and when crossing the bend of the duodenum at the entry point