Mesenteric lymph nodes (MLN) of white rat may be divided on central (or own) MLN, which are lied near trunk of cranial mesenteric artery, and peripheral MLN, which are lied near terminal branches of cranial mesenteric artery, the central MLN - on the proximal (parapancreatic) and the distal (paracolic), and the proximal MLN - on two groups:
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paraaortic MLN (retropancreatic - 2, oval or bean΄s shape), lymph flows out from they into preaortic lymphatic plexus and/or into left lumbar trunk, which skirting aorta from ventral side, or cisterna chyli;
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interintestinal MLN (pancreaticoduodenal - 3-4, oval, round or bean΄s shape), lie on the ventrocaudal side from pancreas, between duodenojejunal flexure (dorsal and left side) and crossing of middle, saggital segment of ascend colon in distal, frontal loop of colon (ventral and right side).
Distal central MLN (4-5 shape likely beans or coffee beans) as chain of different solidity extend in common root of mesentery and mesocolon, under vascular bundle, into thickness of fat tissue of root body in mesentery. The root body consists of solid interweaving of different vessels and nerve fibres dipping into fat tissue. The body has shape of direct or curved cylinder, which extend along middle segment of ascend colon on the right side or on both sides from it. The last two of distal central MLN (terminal central MLN) lie on left side from crossing of ventral, transverse loop of ascend colon in its middle segment, on both sides from branching of iliocolic artery from cranial mesenteric artery. The peripheral MLN are:
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iliocolic (oval 3-4 nodes of different sizes lie as compact group along iliocolic artery);
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iliocaecal (large node with bean΄s shape lies over ending of ilium).
The work was submitted to International Scientific Conference «Fundamental and applied research in medicine», Sochi, 22-25 September 2011, came to the editorial office on 29.07.2011.