hemizygous vein
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Related to hemizygous vein: accessory hemiazygos vein
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| Noun | 1. | hemizygous vein - a continuation of the left ascending lumbar vein; crosses the midline at the 8th vertebra and empties into the azygos vein vein, vena, venous blood vessel - a blood vessel that carries blood from the capillaries toward the heart; "all veins except the pulmonary vein carry unaerated blood" |