INCIPIENCE OF ARTERIAL SUPPLY OF COMMON BILE DUCT IN PRENATAL PERIOD OF HUMAN ONTOGENESIS

Abstract

Peculiarities of structure and development of arterial vessels of common bile duct (CBD) has been researched on 68 series of hystologic sections of embryos and 62 corpses of human fetuses and newborns. It has been established that since 7th week of prenatal period the origins of arterial supply of CBD are anastomotic branches of posterior pancreato-duodenal arcade and anterior superior pancreato-duodenal a. partially. Primordium of definitive structure of arterial vessels of intramural part of CBD is identified as intermuscular and subepithelial vascular plexuses, which situated around the basis of major duodenal papilla in fetuses 82,0-170,0 mm in parietal-coccygeal length.