02-03-2010, 06:57 PM
4. Four months after a cholecystectomy for removal of gallstones, a 43-year-old woman has recurrent episodes of biliary colic. After endoscopic sphincterotomy, the episodes of colic do not recur. Which of the following defects in the sphincter of Oddi best explains this patient™s course?
A. Inability of smooth muscle to contract
B. Inability of the enteric nervous system to activate excitatory motoneurons
C. Loss of enteric inhibitory motor innervation
D. Reflux of duodenal contents into the common bile duct
E. Release of vasoactive intestinal polypeptid
A. Inability of smooth muscle to contract
B. Inability of the enteric nervous system to activate excitatory motoneurons
C. Loss of enteric inhibitory motor innervation
D. Reflux of duodenal contents into the common bile duct
E. Release of vasoactive intestinal polypeptid