Duodenum
Duodenum is the first of the three parts of the small intestine. It extends from the pylorus of the stomach to the jejunum. The duddenum recieves bile from the gall bladder (via the common bile duct) and pancreatic juice from the pancreas. Its wall contains various glands (including Brunner's glands) that secrete an alkaline juice, rich in mucus, that protects the duodenum from the effects of acidic chyme passing from the stomach.
Unit 3,
Reference: Oxford Concise Medical Dictionary (9th ed) Oxford University Press 2015 ISBN-13: 9780199687817, p1364