<prompt> Which of the following is not an anterior relation of second pa of duodenum ?gallbladdertransverse colontransverse mesocolonhead of pancreas  <response>: Anterior Visceral relation of 2nd pa of duodenum: a Right lobe of the liver; b transverse colon, c root of the transverse mesocolon, and d small intestine. Ref : B D Chaurasias Human Anatomy , seventh edition , volume 2 , pg. no., 286. FIG Ref : B D Chaurasias Human Anatomy , seventh edition , volume 2, Fig. 20.8a pg. no., 286 . 