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superior mesenteric (nerve) plexus

 

Definition: 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 plexuses; 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 ultrasound.

Synonym(s): plexus (nervosus) mesentericus superiorTA

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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