<prompt> The mesentery of small intestine, along its attachment to the posterior abdominal wall, crosses all of the following structures except:Left gonadal vesselsThird pa of duodenum.AoaRight ureter.  <response>: A i.e. Left gonadal vesselsRoot of mesentery crosses successively te ascending 4th and inferior horizontal 3rd pas of duodenum, abdominal aoa, IVC, right ureter, right psoas major and right gonadal testicularovarian vesselQ. It does not cross left ureter, leftgonadal vessels and superior mesenteric vessels. 