THE LIVER. 



545 



nate branches, take for the most part a remarkable, corkscrew-like, 

 coiled course, repeatedly anastomosing, and thus spread over the whole 

 surface of the organ, as far as the great venous trunks (vence hepaticce, 

 vena portce, cava inferior), t\\Q fossce of the liver and its edges, as an 

 elegant arterial network. In the end, these arteries everywhere form 

 a capillary plexus with wide meshes, from whence, in many parts 

 whether universally or not I do not know veins arise, which run back 





parallel with the arteries, enter the liver and open into the portal 

 branches. Portal radicles, or vence advehentes capsulares, must be de- 

 rived, therefore, from this region also. The arteries and veins of the 

 hepatic coats are in their terminal expansion connected, on the one 

 hand, with prolongations of the internal mammary, phrenic, cystic and 

 even the right suprarenal and renal vessels (Theile), and anastomose, on 

 the other side, in the hepatic fossce, with those of Glisson's capsule, with 

 the vena cava and hepatic vein. 



3. Rami lobulares. With every interlobular vein there runs a branch 

 of the hepatic artery, of at most lis r of a line in diameter (Theile), 

 which, in the Pig, divides between the hepatic islets, in the capsules of 

 the lobules, into fine anastomosing twigs, and is directly connected with 

 the peripheral part of the capillary network of the hepatic islets or 

 lobules, formed, as stated above, by the portal vein. Arterial blood, 

 therefore, takes a part, although, perhaps, a minor one, in the prepara- 

 tion of the bile, and the hepatic artery is thus distinguished from the 

 bronchial arteries, whose blood is carried away by special veins. 



The lymphatics of the liver are very numerous, and may be divided 

 into superficial networks, under the peritoneum; and deep vessels, 



FIG. 224. Arterial network upon the convex surface of a child's liver. Natural size. 



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