<prompt> Watershed zone of large intestine ?CecumAscending colonRectosigmoidTransverse colon  <response>: There are areas of colon with poor blood supply resulting from incomplete anastomosis of marginal aeries. These are watershed areas of colon and include :Splenic flexure Griffith point : Watershed area between superior mesenteric aery and inferior mesenteric aery.Rectosigmoid junction Sudecks point : Watershed zone between inferior mesenteric aery and internal iliac aery. 