ni!i; i y> 



423 



stulied l>y r.ernard ami Schiff, and named " animal amMon;" and, lastly, 

 MtipOfle grannies, whose volume :unl quantity Viiry with the condition of tho 

 animals, or tlio period of di^-stion at which the liver has been removed. 

 The hepatic cells are situated in the network formed hy the vessels of the 

 lobule, and constitute its principal portion. 



tic Ihirta. Destined to curry away tho bile secreted in tho interior 

 of the hepatic lolmlc, the bili- 

 ary ducts fonn around it a kind 

 of Lrirdle that accompanies the 

 interlobular branches of the 

 vena portsu. Within and with- 

 out, this girdle sends off small 

 proloninneiits : the first brin*; 

 it into communication with 

 the ducts of the neighbouring 



lobules; the s.-c.tnd enter tho 



substance of tho lobule and 

 are soon lost. 



The wall of the biliary 

 ducts is a thin amorphous 

 membrane, lined by polygonal 

 cells, smaller than the hepatic 

 cells. 



The ori'/iit <if tin- biliary or 

 ln/'iif/i- ilncts in the interior of 

 the lobules is still a vexed 

 question in histology. It was 

 believed, and some authorities 

 still believe, that tho ducts terminate in pouches, at a short distance from 

 the periphery of the lobule. But it has been remarked that an injection 

 introduced by the ductus eholcdochus does not remain near the periphery 

 of the lobule, but, on the contrary, penetrates to 

 its centre by passing between tho hepatic cells ; and 

 fmm this it is admitted that the hepatic ducts fur- 

 nish a very line network around each of the cellular 

 elements of tho liver (Fig. 213). Nevertheless, there 

 are histologists who do not share in this opinion, 

 \\ho assert that these terminal ducts have no 

 proper walls, and that the suppost-d H. twmks they 

 farm is only a simple system of infi n-i-lliilar ttpaces 

 ili-t-mled by the injection. 



/// Missels. These are the branches of tho 

 1 V- in and hepatic artery. Tho }M>rtul vein, 

 reaching the iiitc rior of the liver, divides into 

 decreasing vessels, until it terminates by 

 th" infi-rlnhuliir or Kiililifjmtir rrinx. These 

 Around tho lobule, communicate with tho 

 neighbouring intcrlobular veins, and give off a largo 

 number of twigs to the interior of tho lobule, whoro a, Capillaries of th.- i.iim-y 

 thev anastomose, and constitute the hepatic capillary <ll ",, t .l ; '"' |Jei*tlc otlbj 



i ' mi_ i L- f i_ i ^, lilliarv <litcts ; ./. .i- 



plexus. Tho hepatic artery furnishes minuscules, Sflluy blood-relit. 



which mix with tho ramilications of tho portal vein 



in the (vaginal) plexus. Tho principal branches of the latter are all 



A. Portion of a hepatic column, showing its compo- 

 nent secreting cells ; B, Secreting cells detached ; 

 , In their normal state ; 6, A cell more highly 

 magnified, showing the nucleus and distinct oil- 

 particles ; c, In various stages of fatty degenera- 

 tion. 



Fig. 213. 



lill.l.VKY c\ni.|.vi:ll > (.1 



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or A 1.01111.1:, 



siiowiv; nil M. 



MI s i i-r 1111. 1. 11. i \i:v 



HI IS IN l:l.l.VMi'S 10 



nil. ni.ivui. . i i i.v 



