198 MICROSCOPIC ANATOMY OF THE ORGASS. 



of the circulation. The larger part is venous blood entering 

 the liver from the vena portse. This blood not only brings the 

 materials to be stored up in the liver, but also nourishes those 

 parts of the liver not reached by the arteries. 



FIG. 151. 



Tr'.'-^ 



From a thin section through the liver of a siredon. a, blood capillary. The small passages 



are bile capillaries. X 325. 



The vena portce (Fig. 155) divides in the interlobular con- 

 nective tissue into branches interlobular veins which form 

 at the periphery of the liver lobule a capillary network, in the 

 meshes of which lie the columns of liver cells. The capillaries 



FIG. 152. 



_,,n_ Much dilated 

 Nucleus^ ^-^v , bile passage 



Liver cell with two nuclei, from a human liver in which there is a damming back of the 

 bile. The intracellular bile passages are much dilated. (Preparation by Browicz.) 



proceed from all sides of the lobule toward the central or intra- 

 lobular vein. The central veins in turn open into the sublobu- 

 lar veins, which run along the bases of the lobules. Many 



