Final answer:
The ampulla of Vater is the area in the duodenum where the bile duct and the main pancreatic duct come together, allowing bile and pancreatic juice to enter the small intestine.
Step-by-step explanation:
The ampulla of Vater is the area in the duodenum where the bile duct and the main pancreatic duct come together. This is also known as the hepatopancreatic ampulla. It is the point where bile from the liver and pancreatic juice from the pancreas join and enter the small intestine.