106 THE PHYSIOLOGY OF DIGESTION AND ABSORPTION 



vein are not the only interlobular veins, however. Those 

 branches of this vein which were given off to the capsule of 

 Glisson, having received the corresponding branches from 

 the hepatic artery, also here run between the lobules and 

 make part of the interlobular plexus. The interlobular veins, 

 thus surrounding the lobules and having lobules on either 



FIG. 44. Diagram of the portal vein. 



(pv) arising in the alimentary tract and spleen (s) and carrying the blood 

 from these organs to the liver. (From Brubaker after Yeo.) 



side of them, giving off in both directions branches (lobular 

 branches) which penetrate the lobules, to break up into ca- 

 pillaries. The capillaries finally converge to three or four 

 small radicles, which in turn unite to form a small vein in the 

 center of the lobule. This is the intralobular vein, which at 

 the base of the lobule joins the sublobular vein. These sub- 

 lobular veins join each other to form hepatic veins, which 



