470 



DISSECTION OF THE ABDOMEN. 



Fig. 159. 



many sided, and possess a bright nucleus, or even more than one. In 

 size they vary from T ^ir tn * ^TT tn ^ an inch. They are of a yellowish 

 color, and inclose granular particles, together with fat and yellow coloring 



matter. These nucleated cells adhere 

 together by their surfaces so as to form 

 rows radiating from the centre, with 

 spaces (b) between them for the blood- 

 vessels and ducts. The cells are con- 

 cerned in the secretion of the bile. 



Vessels of the lobule (fig. 160, B). 

 The smallest branches of the venaportce, 

 after uniting in a circle around the lo- 

 bule, where they are named interlobular 

 (), enter its substance, and form therein 

 a network of capillaries (c) near the cir- 

 cumference. 



A small branch of the hepatic vein (c?) 

 occupies the centre of the lobule ; its 

 radicles communicate with the portal 

 network, and it issues from the base of 

 the lobule as the intraJobular vein. 



The radicles of the bile duct (fig. 1 60, 

 A) begin within the lobule in a fine in- 

 tralobular plexus of ducts (g) between 



Fig. 160. 



A MAGNIFIED REPRESENTATION or THE 

 HEPATIC CELLS, with their arrange- 

 ment iu the lobule (Henle). 



a. Cells. 



fc. Intercellular spaces. 



A. Two lobules of the liver showing the plexus 

 of ducts in the interior, near the circum- 

 ference (Kiernan); recent inquiries de- 

 monstrate the existence of a plexus 

 throughout th; lobule. 



y. Intritlobular plexus. 



/. Interlobular ducts. 



e. Small branches of the hepatic- ducts. 



B. Lobules of an injected liver to show the 

 arrangement of the veins. 



a. Smallest branches of the vena portse end- 

 ins,' in the interlobular veins, 6. 



c. Plexus of portal veins within the lobule. 



d. Intralobular commencement of the hepa- 

 tic vein joining the plexus of the portal 

 vein. 



the hepatic cells (Chrzonszczewsky) ; they lc;i\c the lobule at the cir- 

 cumference, and are joined together outside it in the smallest interlohulur 

 branches (/). 



