Full Cystic Duct Description
[Continued from above] . . . This transfer helps the important fluid flow freely, thus allowing lipids to be processed in the small intestine.
It has a spiral valve, which is a curved mucosal lining that is lined with deep folds. This valve doesn't offer much resistance to the flow of bile, which means that bile can flow pretty freely between the bile duct and the gallbladder. The gallbladder can therefore store bile between mealtimes, which is then released upon consumption of fatty foods, such as those containing high amounts of cholesterol. Unfortunately, this easy flow also means that gallstones can be released into the cystic duct and can block the bile flow. This blockage can lead to painful swelling of the gallbladder and sometimes requires surgery.