The uncinate process is the formed prolongation of the angle of junction of the lower and left lateral borders in the head of the pancreas.

The ventral pancreas develops at the junction of the hepatic duct and the rest of the foregut.

They then fuse; the dorsal pancreatic bud becomes the body, tail, and isthmus of the pancreas.

The main pancreatic duct is formed by the fusion of the dorsal and ventral pancreas.

This article incorporates text in the public domain from page 1200 of the 20th edition of Gray's Anatomy (1918)