Contribution to the study of the liver's excretor system in Zebu cattle, of ductus choledocus, ductus hepaticus, ductus cysticus and vesica fellea. Sistematization of the ramus principalis dexter

Abstract

It was studied, by dissecation, the biliary ductus in 30 livers removed from adult zebu cattle (21 males and 09 females). The results obtained were: 1) The ductus choledocus is formed by the convergence of the ductus hepaticus and ductus cysticus (96.7%) or by the convergence of the ramus principalis dexter, ramus principalis sinister and ductus cysticus (3,3%); 2) The ductus hepaticus is caracterized in 96.7% of the cases and receives tributaries (46.7%) from lobus dexter, lobus caudatus and lobus quadratus; 3) The ductus cysticus also receives tributaries (86.7%) from lobus dexter, lobus caudatus and lobus quadratus; 4) Hepatocystic ducts has been evidenciated connected mainly to the vesica fellea (56,6%); 5) The system of the ramus principalis dexter is integrated, mainly, by the ramus dorsalis lobi dextri (100%), the ramus medialis lobi dextri (93.3%), the ramus processi caudati (86 .6 %), ramus lateralis lobi dextri (73.3%), the rami intermedii lobi dextri and the inominate little ducts from the lobus dexter, lobus caudatus and lobus quadratus; 6) In deal of glands (20.0%) it has been showed anastomosis among different collectors.