164 ANATOMY FOE NTJBSES. [CHAP. XIV. 



denura and pours its contents into the interior of the intestine. 

 The secretion formed in the pancreas is called the pancreatic 

 juice. 



In shape, the pancreas somewhat resembles a dog's tongue. 

 It is a flat, elongated organ, about six to eight inches in length, 

 one and a half inches in width, and from half an inch to an inch 

 thick. It lies beneath the greater curvature of the stomach and 

 at the back of the abdominal cavity. 



The liver. The liver is the largest gland in the body, weigh- 

 ing ordinarily from fifty to sixty ounces, and measuring ten to 



twelve inches from side 

 to side, six to seven from 

 above downwards, and 

 three inches from before 

 backwards in its thickest 

 part. It is a dark red- 

 dish-brown organ, placed 

 in the upper right and 

 middle portion of the 

 abdomen, and extending 



somewhat into the left 

 FIG. 102. UNDER SURFACE OF LIVER. 1, 



right lobe ; 2, left lobe ; 3, 4, 5, smaller lobes ; 9, 12, hypochondriac region, 



inferior vena cava ; 10, gall-bladder ; 11, transverse rpi llrkrkOT> nrmAr ov c 



fissure, or " gate of liver," containing bile duct, he- U PP 6 



patic artery, and portal vein. face fits closely into the 



under surface of the 



diaphragm. The under concave surface of the organ fits over 

 the right kidney, the upper portion of the ascending colon, and 

 the pyloric end of the stomach. The liver is unequally divided 

 into two lobes, the right being much larger than the left. It is 

 covered by a layer of peritoneum, and is also suspended and 

 kept in position by ligamentous peritoneal bands. 



The liver not only differs in size from the other secreting 

 glands ; it also offers other striking peculiarities. First, it re- 

 ceives its supply of blood from two different sources ; namely, 

 arterial blood from the hypatic artery, and venous blood from 

 the stomach, spleen, pancreas, and intestines, by means of the 

 portal vein. Secondly, the different parts of the secretory 

 apparatus, the cells, blood-vessels, and ducts, instead of being 

 arranged as elsewhere in distinct tubes or sacs, are closely 

 united and massed together. The secreting cells are collected 



