| mesenteric hernia | Hernia through a hole in the mesentery. (05 Mar 2000) |
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| mesenteric lymphadenitis | A condition clinically resembling acute appendicitis, in which there is inflammation of the mesenteric lymph nodes receiving lymph from the intestine. A septal form, which is frequently fatal, and a milder form, which is self-limited, are caused by yersinia (pasteurella) pseudotuberculosis. (12 Dec 1998) |
| mesenteric portion of small intestine | The freely movable portion of the small intestine supplied with a mesentery, comprising the jejunum and ileum. Synonym: mesenteric portion of small intestine. (05 Mar 2000) |
| mesenteric vascular occlusion | Obstruction of the flow in the mesenteric circulation by atherosclerosis, emboli or thrombi, stenosis, trauma, and compression or intrinsic pressure from adjacent tumours. Rare causes are drugs, intestinal parasites, and vascular immunoinflammatory diseases such as periarteritis nodosa and thromboangiitis obliterans. (12 Dec 1998) |
| mesenteric veins | Veins which return blood from the intestines; the inferior mesenteric vein empties into the splenic vein, the superior mesenteric vein joins the splenic vein to form the portal vein. (12 Dec 1998) |
| mesenteric vessels | <anatomy> Those arteries and veins that supply the small and large intestines. (27 Sep 1997) |
| 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 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) |
| 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) |
| inferior mesenteric artery | <anatomy, artery> Origin, abdominal aorta; branches, left colic, sigmoid, superior rectal; anastomoses, middle colic and middle rectal. Synonym: arteria mesenterica inferior. (05 Mar 2000) |
| inferior mesenteric ganglion | The lowest of the sympathetic prevertebral ganglia, located at the origin of the inferior mesenteric artery from the aorta and containing the sympathetic neurons innervating the descending and sigmoid colon. Synonym: ganglion mesentericum inferius. (05 Mar 2000) |
| 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) |
| inferior mesenteric vein | <anatomy, vein> A continuation of the superior rectal vein at the brim of the pelvis, ascending to the left of the aorta behind the peritoneum and emptying into the splenic vein or into the superior mesenteric vein or rarely in the angle between these veins. Synonym: vena mesenterica inferior. (05 Mar 2000) |