152 



FOURTEENTH LECTURE. 



Fig. 142.— Cells of the fat- 

 ty liver ; a, t>. with smaller 

 fat molecules and drops ; c, 

 rf, with large drops. 



abundantly (pig). 



With an altered manner of life, the unusual contents soon 

 disappear again. 



In the lobule (Fig. 141) the cells lie crowded together in 



a radiated manner, forming simple rows. 

 Reticular combinations gradually become 

 more frequent externally. These are the 

 so-called cellular trabecular and cellulo- 

 trabecular reticula of our organ. 



Between the lobules we meet with in- 

 terstitial connective tissue, sometimes 

 only slightly developed (man), sometimes 

 This connective tissue derives its origin, 

 in part, from the investing membrane of the liver ; it is, in 

 part, the continuation of a connective-tissue sheath which sur- 

 rounds the blood-vessels and biliary passages entering the 

 porta hepatis (Glisson's capsule). 



The liver receives its blood from two unequally developed 

 supply tubes, the wide portal vein and the narrow hepatic 

 artery. The first forms, around the lobules, partly shorter or 

 longer branches (Fig. 94), sometimes, however, nearly and 

 actually assuming a ring-shaped arrangement (pig). These 

 branches rapidly divide into the compact capillary net-work 

 of 0.009 to 0.0126 mm. wide tubes. They approach the cen- 

 tre of the lobule in a radial manner to bury themselves in the 

 commencing portion of the hepatic vein, which is situated at 

 this point. The latter, like its larger trunks, has uncom- 

 monly thin walls, and has coalesced externally with the 

 parenchyma of the liver. 



The branches of the hepatic artery, running along with the 

 portal vein and biliary ducts, form, in the first place, nu- 

 tritious vessels for both the last mentioned parts, and then 

 capsular capillaries ; finally, they penetrate the lobule itself. 

 They either bury themselves here in the branches of the por- 

 tal vein, or pass over into the peripheral portion of the capil- 

 lary net-work. 



Both varieties of net-work, that of the hepatic cell tra- 

 becular and that of the blood-vessels, are most intimately 



