Figure 1.
Hypothetical schema showing ‘rotation’ of duodenum and pancreas (transverse section). (A) A ventral pancreatic bud appears in the ventral wall of the primitive duodenum. (B) As a result of expansion of the left side of the duodenum, the ventral pancreas passively comes to the right. (C) The ventral pancreas fuses with the dorsal pancreas. (D) Final retroperitoneal position of duodenum and pancreas.