<prompt> The neck of pancreas is related on its posterior surface toGastroduodenal aerySuperior mesenteric veinInferior vena cavaBile duct  <response>: Neck of pancreas is located between the head and the body of the pancreas. It overlies the superior mesenteric vessels which form a groove in its posterior aspect. Ref - BDC 6e vol2 pg 298-300 