Adjective
Pertaining to a mesentery; mesaraic.
Source: Webster's dictionaryHistorically, it has been believed that the arc of Riolan, or the meandering mesenteric artery (of Moskowitz), is a variable vessel connecting the proximal SMA to the proximal IMA that can be extremely important if either vessel is occluded. Source: Internet
The lower margin of the pancreas separates the posterior from the inferior surface; the superior mesenteric vessels emerge under its right extremity. Source: Internet