| superior mesenteric plexus | An autonomic plexus, a continuation of the abdominal aortic plexus, sending nerves to the intestines and forming with the vagus the subserous, myenteric, and submucous plexus's; this periarterial plexus is so dense that it results in the appearance of a characteristic perivascular "collar" distinguishing the superior mesenteric artery from the superior mesenteric vein in several imaging modalities such as with ultra sound. Synonym: plexus mesentericus superior. (05 Mar 2000) |
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| inferior mesenteric plexus | An autonomic plexus, derived from the abdominal aortic plexus, surrounding the inferior mesenteric artery and sending branches to the descending colon, sigmoid, and rectum. Synonym: plexus mesentericus inferior. (05 Mar 2000) |
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| mesenteric artery, superior | A large vessel supplying the whole length of the small intestine except the superior part of the duodenum. It also supplies the caecum and the ascending part of the colon and about half the transverse part of the colon. It arises from the anterior surface of the aorta below the coeliac artery at the level of the first lumbar vertebra. (12 Dec 1998) |
| superior mesenteric artery | <anatomy, artery> Origin, abdominal aorta; branches, inferior pancreaticoduodenal, jejunal, ileal, ileocolic, appendicular, right colic, middle colic; anastomoses, superior pancreaticoduodenal and left colic. Synonym: arteria mesenterica superior. (05 Mar 2000) |
| superior mesenteric artery syndrome | <radiology> Partial obstruction of third part of duodenum by superior mesenteric artery seen with: marked weight loss, anorexia nervosa, total body casting X-ray: distension of proximal duodenum, classically disappears when prone (12 Dec 1998) |
| superior mesenteric ganglion | A paired sympathetic ganglion located at the origin of the superior mesenteric artery from the aorta. Synonym: ganglion mesentericum superius. (05 Mar 2000) |
| superior mesenteric lymph nodes | The numerous nodes located in the mesentery along the superior mesenteric artery; they receive lymph from the central mesenteric lymph nodes and drain into the intestinal lymph trunk. Synonym: nodi lymphatici mesenterici superiores, nodi lymphatici centrales. (05 Mar 2000) |
| superior mesenteric vein | <anatomy, vein> Begins at the ileum in the right iliac fossa, ascends in the root of the mesentery, and unites behind the pancreas with the splenic vein to form the hepatic portal vein. Synonym: vena mesenterica superior. (05 Mar 2000) |
| superior dental branches of superior dental plexus | Branches passing from the superior dental plexus to the roots of the teeth of the upper jaw. Synonym: rami dentales superiores plexus dentalis superioris. (05 Mar 2000) |
| superior gingival branches of superior dental plexus | Branches of superior dental plexus to gingiva of upper jaw. Synonym: rami gingivales superiores plexus dentalis superioris. (05 Mar 2000) |
| ascending branch of the inferior mesenteric artery | <anatomy, artery> Branch of the left colic artery (from inferior mesenteric artery) that passes anteriorly to the left kidney into the transverse mesocolon, where it anastomoses with the middle colic artery. It thus forms an anastomosis between superior and inferior mesenteric arteries, and is a component of the marginal artery (Drummond) of the colon. Synonym: arteria ascendens, arteria intermesenterica. (05 Mar 2000) |
| central mesenteric lymph nodes | The mesenteric lymph nodes located along the intestinal (jejunal and ileal) branches of the superior mesenteric artery. Synonym: nodi lymphatici superiores centrales, central mesenteric lymph nodes. (05 Mar 2000) |
| mesenteric | <anatomy> Pertaining to the mesentery: a membranous fold attaching various organs to the body wall. Origin: Gr. Mesenterikos (18 Nov 1997) |
| mesenteric adenopathy | <radiology> 4% in Hodgkin's disease, 50% in non-Hodgkin's lymphoma, ** sandwich sign (12 Dec 1998) |
| mesenteric arteries | Arteries which arise from the abdominal aorta and distribute to most of the intestines. (12 Dec 1998) |
| mesenteric artery, inferior | The artery supplying nearly all the left half of the transverse colon, the whole of the descending colon, the sigmoid colon, and the greater part of the rectum. It is smaller than the superior mesenteric artery (mesenteric artery, superior) and arises from the aorta above its bifurcation into the common iliac arteries. (12 Dec 1998) |