A

Pancreas of a human embryo, fifth week

B

Pancreas of a human embryo, seventh week

C

Most common arrangement of pancreatic ducts

D

Specimen with three papillae

E

Adult pancreas showing an embryonic type of duct system in which the accessory duct carries most of the pancreatic secretion

F

Adult pancreas showing an unusual loop configuration of the main pancreatic duct

G

In 73 of 250 specimens, about 29%, no connection between the pancreatic and bile ducts was found, each entering the duodenum contiguously or at separate points

H

In 92 specimens, 37%, the two ducts were contiguous with the dividing septum terminating about 2 mm from the apex

I

In 81 instances, 30%, the duct emptied into a common ampulla which extended from 3 to 14 mm from the apex of the duodenal orifice. In four specimens the length of the diverticulum exceeded 10 mm and was as shown

J

In four instances the pancreatic duct was reduced to a fibrous cord (not shown), and the accessory duct drained the entire gland.