Pancreas vs. Liver: Understanding Bile Production

The liver produces bile; the pancreas does not.

Liver & Bile

• Hepatocytes continuously produce bile (600–1000 mL/day).
• Bile composition: Water, electrolytes, bile salts, cholesterol, phospholipids, bilirubin.
• Bile flows through hepatic ducts → common hepatic duct → gallbladder (storage/concentration) or directly to duodenum via common bile duct.

Pancreas & Digestive Enzymes

• The pancreas produces digestive enzymes (amylase, lipase, proteases) and bicarbonate-rich fluid.
• Pancreatic juice flows through pancreatic duct → joins common bile duct at ampulla of Vater → duodenum.
• Key point: Pancreatic lipase works with bile salts (emulsify fats) to digest triglycerides.

Clinical Relevance

• Gallstones can block common bile duct → obstructive jaundice, pancreatitis.
• Pancreatitis can compress bile duct → secondary biliary obstruction.
• Bile reflux into pancreatic duct may trigger pancreatitis.