Valve of heister is seen in: (A) Cystic duct, (B) Common bile duct, (C) Common hepatic duct, (D) Pancreatic duct
Answer is A. Ans. is 'a' i.e., Cystic ductThe mucous membrane of the cystic duct forms a series of 5-12 crescentic folds, arranged spirally to form the so called spiral valve of Heister. This is not a true valve.Also knowHamanns pouch - dilated posteromedial wall of neck of gall bladder.Sphincter choledochus - always present - terminal pa of bile ductSphincter pancreaticus - usually present - terminal pa of pancreatic ductSphincter ampullae (of Oddi) - surrounds the hepatopancreatic ampulla