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 
es =| 
& Post. vena cava 
= = Pancreatic 
| duct 
Stomach 
Fic. 371.—Pancreas oF Horse witH Cuter 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 
porte). 
The anterior or duodenal angle (Angulus cranialis)! 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 liver. The ducts leave at this ex- 
tremity. 
The left or splenic angle (Angulus sinister)? fits into the space between the 
saccus cxecus 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 
