11/15/15

duodenum

LOCATION OF THE DUODENUM
The duodenum - The first part of the small intestine. The duodenum begins at the duodenal cap, just beyond the pylorus (the muscular valve at the lower end of the stomach). It extends to the ligament of Treitz, which marks the boundary with the second part of the small intestine (the jejunum). (See Location of the duodenum, opposite page.)

The duodenum is about 25 cm long and C-shaped; it forms a loop around the head of the pancreas. Ducts from the pancreas, liver, and gallbladder feed into it through a small opening. Digestive enzymes in the pancreatic secretions and chemicals in the bile are released into the duodenum through this opening.

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