160 EQUINE ANATOMY. 



is the medium in size, and has on its posterior face the 

 lobule of Spigel ; the left lobe is the largest. Mode of 

 attachment : Four ligaments, one for each lobe, and one 

 to the phrenic portion of the diaphragm. {Structure : 

 Serous membrane covering the faces entirely, except 

 over the fissures. Fibrous or Glisson's capsule, an en- 

 velope dipping into the hepatic tissue, and sending 

 from its internal face numerous partitions, which pen- 

 etrate between the hepatic granulations. Proper tis- 

 sue of the liver, composed of polyhedric granulations 

 or lobules, in each of which are found the hepatic or 

 biliary cells, biliary ducts, afferent vessels, branches 

 of the portal vein and hepatic artery, the ramifications 

 of the first being called the interlobular or sub hep- 

 atic veins ; an effervent vessel with a lobular or supra 

 hepatic vein, lymphatic and connective tissue. Excre- 

 tory apparatus : ductus choledochus, emptying in the 

 duodenum. It is composed of a fibrous membrane, a 

 cylindrical epithelium and racemose glands. Blood 

 vessels: hepatic artery. Yeins: postal and supra hep- 

 atic. Lymphatic : abundant, empty in the sub-lumbar 

 reservoir of Pecquet. Nerves : from the solar plexus, 

 pneumogastric and diaphragmatic filaments. 



Spleen. — Form: falciform. Direction and situation: 

 to the left of the diaphragmatic region, obliquely 

 downwards and forwards. Division : Two faces, two 



