part of part_of part of part_of drains drains tributary_of tributary of large intestine inferior mesenteric vein A blood vessel that drains blood from the large intestine that usually terminates when reaching the splenic vein, which goes on to form the portal vein with the superior mesenteric vein (SMV). Anatomical variations include the IMV draining into the confluence of the SMV and splenic vein and the IMV draining in the SMV. The IMV lies to the right of the similarly name artery, the inferior mesenteric artery, which originates from the abdominal aorta. [WP,unvetted]. BTO:0002782 EHDAA2:0000819 EHDAA:8712 EMAPA:18642 FMA:15391 MA:0002178 NCIT:C32782 OpenCyc:Mx4rvcV53ZwpEbGdrcN5Y29ycA UBERON:0001215 UMLS:C0226754 VHOG:0001118 lower mesenteric vein uberon vena mesenterica inferior splenic vein mesenteric vein