DIGESTION. 



109 



LIVER. 



The largest gland in the body is the liver. Its shape is that of 

 a triangular prism or ovoidal, with its long diameter transverse. Its 

 convex surface is against the diaphragm. Its concave surface is in 

 contact with the -stomach, colon, and right kidney. The right and left 

 lateral ligaments, with the suspensory ligament, hold it in position. 

 It weighs from three to four pounds. The right portion of the liver 

 is much larger than the left. It is also thicker and extends lower in 

 the abdomen and higher in the thorax. It is of a firm structure, 







2- 





Fig. 28. Liver of Man. (DuvAL.) 



1, Left lobe. 2, Right lobe. 6, Lobus quadratus. 7, Lobus Spigelii. 9, Gall- 

 bladder. 10, Cystic duct. 11, Hepatic duct. 12, Common biliary duct. 13, Portal 

 vein. 14, 15, Hepatic veins. 16, Inferior vena cava. 19, Hepatic artery. 



smooth on the surface, and of a reddish-brown color. The liver has 

 five lobes, five fissures, five ligaments, and five vessels. TEe chief 

 fissure to remember is the transverse fissure, which is the point where 

 the blood-vessels and nerves enter the liver and where the lymphatics 

 and excretory duct emerge. The lobes are the quadrate, caudate, right 

 and left, and lobus Spigelii, the most important being the right and 

 left. The vessels are the hepatic artery, vein, and duct, the portal 

 vein, and lymphatics. The nerves are derived from the solar plexus 



