ascending lumbar vein

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as·cend·ing lum·bar vein

[TA]
paired, vertical vein of the posterior abdominal wall, adjacent and parallel to the vertebral column, posterior to the origin of the psoas major muscle; it connects the common iliac, iliolumbar, and lumbar veins in the paravertebral line, the right vein joining the right subcostal vein to form the azygos vein, the left vein uniting with the left subcostal vein to form the hemiazygos vein.
Synonym(s): vena lumbalis ascendens [TA]

as·cend·ing lum·bar vein

(ă-send'ing lŭm'bahr vān) [TA]
A paired, vertical vein of the posterior abdominal wall, adjacent and parallel to the vertebral column, posterior to the origin of the psoas major muscle; it connects the common iliac, iliolumbar, and lumbar veins in the paravertebral line, the right vein joining the right subcostal vein to form the azygos vein, the left vein uniting with the left subcostal vein to form the hemiazygos vein.

ascending lumbar vein

An anterior-posterior vein along the posterior abdominal wall that connects the common iliac, iliolumbar, and lumbar veins; it empties into the subcostal, azygos, hemiazygos, or first lumbar vein.
See also: vein
References in periodicals archive ?
These vessels are oriented craniocaudally and connected to the ascending lumbar veins, which are located laterally on the vertebral bodies, via the supra- and infrapedicular veins.
Nausea and syncope are due to low cardiac output following inferior caval compression at the bifurcation (complete in 90%, with variable patency of collateral ascending lumbar and spinal canal veins to the azygous veins), while the foetal effects (4,5), including foetal heart rate changes irrespective of the presence or absence of maternal hypotension (6), are also secondary to aortoiliac displacement (usually to the left) and aortoiliac compression (most marked across the lumbar lordosis at L3-5 and exaggerated by uterine contraction) (7,8).