Predominant blood supply to the supraduodenal bile duct is derrived from:
A i.e. Vessels that run upward along the bile duct from the duodenal end of the duct such as the retroduodenal and the gastroduodenal aeriesPredominant (60%) blood supply to supraduodenal bile duct is derived from ascending (running upward) branches from retroduodenal branch of gastroduodenal aery. These branches run upwards from caudal (duodenal) end of CBD.