Contribution to the study of the intra and extra hepatic bile ducts in Landrace breed of swine. Sistematization of ramus principalis dexter

Abstract

It was studied, the biliary ducts in 30 livers from swines Landrace breed removed adults (15 males and 15 females), by means of the use of radiography, dissection anda partial corrosion. The results discriminated down were obtained. The ductus choledocus, always free of the tributaries, resulted of the fusion: of the ductus hepaticus and ductus cysticus (66.7%); ramus principalis dexter and ramus principalis sinister (16.7%); ductus hepaticus and the more ordinary trunk formed by ductus cysticus and ramus lobi dextri medialis (1 0 .0 %); ramus principalis dexter, ramus principalis sinister and ductus cysticus (3.3%); of the first two branches plus the ductus cysticus and ramus lobi dextri medialis (33%) in one covergence triple. The ductus hepaticus was identified in 23 of the 30 preparations (76.7%); 17 of them (56.7%) appeared free of afluents while in other more 6 (2 0 .0 %) joined it the ramus lobi dextri medialis (133%) this branch plus a contingent of the lobus dexter medialis, in the piece remaining (33%). The ductus cysticus, free in 29 out of 30 cases (96.7%), receiveing in the other, an efferent of the lobus dexter medialis (33%); participated of ductus choledocus formation in 25 of them (83.3%) and, compose the system of ramus principalis dexter in the remaining (16.7%). The system of the ramus principalis dexter is composed by the ramus dorsomedialis lobi dextri lateralis (1 0 0 .0 %), the ramus ventromedialis lobi dextri lateralis ( 1 0 0 .0 %), the ramus ventralis lobi dextri lateralis (100.0%), the ramus processi caudati (96.7%), the ramus dorsalis lobi dextri lateralis (96.7%), the ramus lobi dextri medialis (70.0%), the ductus cysticus (16.7%), the ramus dorsalis lobi sinistri lateralis plus ramus dorsomedialis lobi sinistri lateralis (6.7%), being some nameless contributions of the lobus caudatus (pars supraportalis and processus caudatus), lobus dexter medialis, lobus dexter uteralis (dorsal, dorsomedial, ventromedial and ventral territories).