THE HEART. 41 



88. In connection with the first coil of the intestine, 

 note the elongated yellowish Pancreas, doubled on it- 

 self; and, somewhat farther back, lying in the mesentery 

 near where the small and large intestines join, the 

 dark-red, soft, rounded Spleen. Near this organ, the 

 breaking up of the mesenteric artery to form its nu- 

 merous primary branches will be found, and the union 

 of the mesenteric veins to form the main radicle of the 

 portal trunk. 



89. Trace the Cystic Duct, which may readily be seen 

 on squeezing some of the green bile into it from the 

 bladder, from the gall-bladder to the duodenum. It 

 opens into the duodenum obliquely after running close 

 along it for some dist;ance. The Pancreatic Duct opens 

 into the duodenum about an inch nearer the stomach 

 than the bile-duct ; it may easily be found on gently 

 separating the pancreas from the intestine. 



90. Trace the Large Intestine to the pelvis ; note the 

 dilated Rectum, which forms its terminal portion. 



91. Examine the Heart more carefully. Its two auri- 

 cles about equal in size, and the larger vefitricle, usually 

 paralyzed by the chloroform and greatly dilated. Di- 

 vide the ligament passing from the posterior border of 

 the ventricle to the pericardium, and raise the former 

 so as to see the transversely elongated venous sinus 

 behind it. 



92. Continuous with the right end of the venous 

 sinus, is the right superior cava. Trace it for about an 

 inch from the heart, where a small vein will be seen to 

 enter its posterior side ; make an incision in this and 



