Which statement accurately describes the major duodenal papilla's role?

• A. The minor duodenal papilla is the site of entry for bile and pancreatic ducts.
• B. The pyloric sphincter controls bile entry.
• C. The common bile duct opens into the stomach.
• D. The major duodenal papilla is involved with entry of bile and pancreatic ducts.

Answer: (D)

The major duodenal papilla acts as the main gateway for bile and pancreatic secretions into the small intestine. The common bile duct and the main pancreatic duct drain their contents through this opening into the duodenum, with the sphincter of Oddi regulating the flow. The minor duodenal papilla, by contrast, is a separate and smaller opening that may drain an accessory pancreatic duct, not the primary entry for bile and pancreatic juice. The pyloric sphincter controls stomach emptying into the duodenum, not bile entry, and the common bile duct does not open into the stomach. So, describing the major papilla as the entry point for bile and pancreatic ducts best captures its role.