pars cystica

pars cys·ti·ca

the smaller caudal division of the primordial embryonic hepatic bud, developing into the gallbladder and cystic duct.
References in periodicals archive ?
This hepatic diverticulum extends into the septum transversum, where it enlarges and divides into two parts: the larger cranial portion (Pans hepatica), which further divides to form the liver cells and intrahepatic biliary apparatus of the right and left hepatic lobes, and the smaller caudal portion (Pars cystica), which gives rise to the gallbladder and the cystic duct.
The close relationship of the developing hepatic parenchyma cell cords to the pars cystica and early fetal duodenum may explain why ectopic hepatic tissue could be found in the wall of the gallbladder, the gastrohepatic ligament, the umbilical cord, the adrenal glands, the diaphragm, the pancreas, the pylorus, and the splenic capsule if a portion of the pars hepatica is displaced.
With further development this diverticulum forms the pars hepatica and pars cystica. The pars cystica forms the gallbladder and cystic duct, while the pars hepatica proliferates and grows into the surrounding splanchnic mesoderm.
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