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Noun. 1. vertebral vein-a vein that goes through the foramina of the cervical vertebrae and forms a plexus around the vertebral artery; empties into the brachiocephalic vein. vena vertebralis.
Confidence votes 24. Veins function as blood reservoirs. For example, in hemorrhage accompanied by a drop in arterial blood pressure, sympathetic nerve impulses reflexly stimulate the muscular wall of the veins. The resulting venous constrictions help maintain blood pressure by returning more blood to the heart.