Major duodenal papilla
（重定向自Major papilla）
![](/Images/godic/202501/25/Gray10574422.png")
![](/Images/godic/202501/25/Gray11004422.png")
![1. Bile ducts: 2. Intrahepatic bile ducts, 3. Left and right hepatic ducts, 4. Common hepatic duct, 5. Cystic duct, 6. Common bile duct, 7. Ampulla of Vater, 8. Major duodenal papilla
9. Gallbladder, 10–11. Right and left lobes of liver. 12. Spleen.
13. Esophagus. 14. Stomach.
15. Pancreas: 16: Accessory pancreatic duct, 17: Pancreatic duct.
18. Small intestine: 19. Duodenum, 20. Jejunum
21–22: Right and left kidneys (silhouette).
The anterior border of the liver is lifted upwards (brown arrow). Gallbladder with Longitudinal section, pancreas and duodenum with frontal one. Intrahepatic ducts and stomach in transparency.](/Images/godic/202501/25/Biliary_system_multilingual.svg4422.png")
The major duodenal papilla is an opening of the pancreatic duct into the duodenum. The major duodenal papilla is, in most people, the primary mechanism for the secretion of bile and other enzymes that facilitate digestion.