DAVID M. MARTIN, MD / SCIENCE PHOTO LIBRARY DAVID M. MARTIN, MD / SCIENCE PHOTO LIBRARY
Ampulla. Endoscope view of a membranous sack known as an ampulla of Vater in a healthy, normal duodenum. The duodenum is the first section of the small intestine, just after the stomach. The ampulla is formed from ducts of the liver and pancreas where they enter the small intestine.
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