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Related to lumbar veins: ascending lumbar vein
five in number, these veins accompany the lumbar arteries, drain the posterior body wall and the lumbar vertebral venous plexuses, and terminate anteriorly as follows: the first and second in the ascending lumbar vein, the third and fourth in the inferior vena cava, and the fifth in the iliolumbar vein; all communicate through the ascending lumbar veins.
Synonym(s): venae lumbales [TA]
four pairs of veins that collect blood by dorsal tributaries from the loins and by abdominal tributaries from the walls of the abdomen. The lumbar veins are connected by the ascending lumbar vein that runs ventral to the transverse processes of the lumbar vertebrae.