<prompt> Watershed area between SMA and IMA which commonly result in ischemia is?Hepatic flexureSplenic flexureRectosigmoid Jn.Ileocolic In.  <response>: There are several weak points in the colonic blood supply, known as watershed areas, which result from incomplete anastomoses of the marginal aeries.The two most common points are:- Griffiths point at the splenic flexure and- Sudecks point at the rectosigmoid junction.Rectosigmoid junction is the watershed territory between IMA and the internal iliac aery. 