Which structure contains secretions from the gallbladder?

The common bile duct is the correct structure that contains secretions from the gallbladder. When the gallbladder stores bile produced by the liver, this bile is released into the common bile duct when it is needed for digestion, especially after consumption of fats. The common bile duct serves as a conduit, transporting bile to the duodenum, which is the first part of the small intestine, allowing for the emulsification and digestion of fats.

The pancreatic duct, while involved in transporting digestive enzymes from the pancreas, does not carry bile from the gallbladder. The esophagus is part of the digestive tract but is not involved in bile transport. The hepatic duct, on the other hand, carries bile away from the liver but does not contain bile from the gallbladder specifically; rather, it connects with the cystic duct (from the gallbladder) to form the common bile duct.