ABDOMINAL VISCEEA OF THE HOESE. 31 
middle lobe, whilst the head is longitudinally extended, being 
almost parallel to the vena portae, and situated below and to the 
right of that vessel. The head is broad anteriorly and rather 
narrow posteriorly, and continuous from below upwards, and 
from right to left, then from behind forwards, to gain attachment 
to the body, so as to form a ring for the passage of the vena 
portae. The part to the left of this vein is termed the tail of 
the pancreas. 
The pancreas is related by its superior surface to the right, 
left, and Spigelian lobes of the liver, also to the vena cava and 
aorta, which separate it from the phrenic crura. The posterior 
part of the head of the pancreas is in relation with the right 
supra-renal body. The tail of the pancreas is stretched trans¬ 
versely to the branches of the coeliac axis, and attached to the 
left kidney by loose cellular tissue. The inferior surface is in 
contact with the tranverse colon. 
On examining carefully the structured the gland, it is found 
to consist of clusters of cells, from which ducts arise, and these 
unite to form a main trunk, that is traceable back to the tail of 
the pancreas, increasing in size till it reaches the anterior ex¬ 
tremity of the head, where it pierces the duodenum together 
with the hepatic duct. Besides these clusters of cells and 
ducts, the gland contains connecting cellular tissue. 
The pancreas is supplied with arterial blood by branches 
from the three divisions of the ccelic axis, as well as from the 
anterior mesenteric. 
The pancreatic veins empty themselves into the splenic. 
The nerves are derived from the solar plexus, and the 
lymphatics of the pancreas, on issuing from the glandular sub¬ 
stance, may be traced to the common reservoir of chyle and 
lymph. 
[To be continued.] 
