Gastroenterologia Japonica

, Volume 13, Issue 6, pp 433–441 | Cite as

A hydraulic behavior of the mucosal structure of the intramural common bile duct

An Experimental Study
  • Ryukichi Hada
Original Article


In the intramural portion of the common bile duct in the dog, the lumen is occluded by the mucosal folds which are pointed to the direction of the ductal orifice. Luminal occlusion by the folds becomes more marked from the halfway of the portion as judged from the duodenal muscle layers.

A pressure study using the pressure ramp apparatus suggested that the mucosal structure plays some role in generating the passage resistance to bile flow and in the prevention of regurgitation of duodenal content.

Key words

canine choledochoduodenal junction mean opening pressure mucosal folds of the intramural bile duct pressure ramp apparatus 


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Copyright information

© The Japanese Society of Gastroenterology 1978

Authors and Affiliations

  • Ryukichi Hada
    • 1
  1. 1.Department of SurgeryHirosaki University School of MedicineAomori PrefectureJapan

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