THE LIVER. 119 



snle of Glisson, therefore, are to be found the interlobular veins, 

 arteries (from the hepatic artery), and bile-ducts. A thorough 

 knowledge of the liver lobule gives the key to a knowledge of the 

 whole organ. 



The gall cyst, which receives the contents of the hepatic bile-duct, 

 is composed of mucous, muscular, and fibrous coats The larger 

 bile-ducts have a fibrous adventitia and a mucous membrane which, 

 with that of the gall cyst, is lined with columnar epithelium. 



Laboratory exercise No. 37. The liver. Harden in alcohol, embed in 

 paraffin, and stain with haematoxylin and eosin. Observe upon the sur- 

 face the fibrous investment and note the prolongations of its structure 

 into the interior. Focus upon a single lobule and note the following- 

 parts: The interlobular vein, centrally located; the network of ra- 

 diating blood capillaries, which is easily demonstrated in injected speci- 

 mens; the bile capillaries between the hepatic cells, which receive the 

 bile elaborated within the lobule and convey it to the larger bile ducts; 

 the hepatic cells, noting their form and arrangement and granular 

 appearance; the capsule of Glisson, containing bile ducts and branches 

 of the portal vein and hepatic artery. Search for bile ducts and the gall 

 cyst, noting their structure. Drawings. 



MEMORANDA. 



