<prompt> True regarding common bile duct is all exceptOpens 10cm distal to the pylorusLies anterior to IVCPoal vein lies posterior to itUsually opens into duodenum seperate from the main pancreatic duct  <response>: Bile duct : Anatomy It lies in front of the poal vein and to the right of the hepatic aery Common hepatic duct is 1-4cm in length and has a diameter of approx. 4mm CBD is about 7-11 cm in length and 5-10 mm in diameter A fibroareolar tissue containing scant smooth muscle surround the mucosa a distinct muscle layer is absent Most impoant aeries to the Supra duodenal bile duct run parallel to the duct at the 3 9o clock position Approximately 60 of the blood supply to the Supra duodenal bile duct originates inferiorly from the pancreaticoduodenal and retro duodenal aeries Whereas 38 of blood supply originate superiorly from the right hepatic atmeru and cystic duct aery Ref: Sabiston 20th edition Pgno : 1482-1484 