Mesenteric lymph nodes
Encyclopedia
The mesenteric lymph nodes lie between the layers of the mesentery
Mesentery
In anatomy, the mesentery is the double layer of peritoneum that suspends the jejunum and ileum from the posterior wall of the abdomen. Its meaning, however, is frequently extended to include double layers of peritoneum connecting various components of the abdominal cavity.-Mesentery :The...

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They vary from one hundred to one hundred and fifty in number, and may be grouped into three sets, viz.:
  • one lying close to the wall of the small intestine, among the terminal twigs of the superior mesenteric artery
    Superior mesenteric artery
    In human anatomy, the superior mesenteric artery arises from the anterior surface of the abdominal aorta, just inferior to the origin of the celiac trunk, and supplies the intestine from the lower part of the duodenum through two-thirds of the transverse colon, as well as the pancreas.-Location...

    ;

  • a second, in relation to the loops and primary branches of the vessels;

  • and a third along the trunk of the artery.
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