jejunal veins jejunal veins the jejunal veins drains the jejunum and are tributaries of the superior mesenteric vein. jejunal veinsthe portal vein and its tributaries.detailsdrains fromjejunumdrains tosuperior mesenteric veinarteryjejunal arteriesidentifierslatinvenae jejunalesta98a12.3.12.019ta25114fma70927anatomical terminology