sacral vein

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Noun1.sacral vein - vein of the sacral region
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"
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References in periodicals archive ?
The pre-sacral venous plexus is formed by the two lateral sacral veins, the middle sacral vein, and the in-between communicating veins.
But with the press-in anchor, you can go lateral to the middle sacral veins and press in at only one point.