THE PANCREAS 



433 



contact with the terminal part of the great colon and its junction with the small 

 colon. It has usually no peritoneal covering except over a small area at the anterior 

 angle. 



The right border is nearly straight; it is related to the second part of the duo- 

 denum. 



The left border is slightly concave, and is related to the first part of the duode- 

 num, the left sac of the stomach, and the splenic vessels. 



The posterior border presents a deep notch (Incisura pancreatis) where the 

 root of the great mesentery is in contact with the gland. To the right the portal 

 vein lies in the notch, and passes through the gland very obliquely; there is a thin 



V 

 \0, 



^A 



e>. 



'^ yer, 



Riqht 

 kidney 



/i 





stomach 



^^j^/i 



Pancreatic 

 duct 



Fig. 371. — Pancreas of Hokse with Chief Relations; Ventral View. 

 The pancreatic duct and its two chief radicles are indicated by dotted lines, since they are in the substance of the gland. 



bridge of gland tissue dorsal to the vein, thus forming the portal ring (Annulus 



portse). 



The anterior or duodenal angle (Angulus craniaUs)i is the most ventral part 

 of the gland; it is attached to the concavity of the second curve of the duodenum 

 and the adjacent part of the right lobe of the Uver. The ducts leave at this ex- 

 tremity. 



The left or splenic angle (Angulus sinister)^ fits into the space between the 

 saccus cfficus of the stomach in front, the left kidney behind, the base of the spleen 

 dorsally, and the termination of the great colon ventrally. 



The right angle (Angulus dexter) is rounded, and lies on the ventral surface of 

 the right kidney and adrenal body. 



1 This corresponds to the head of the pancreas of man. 



2 This corresponds to the tail of the pancreas of man. 

 28 



