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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.
The phenomenon of vertebral steal occurs when a severe proximal subclavian artery stenosis or occlusion is present and blood reaches the affected arm by passing down the ipsilateral vertebral artery from the posterior fossa circulation, which is being supplied from the other vertebral artery or the circle of Willis (see Fig. 48.3B).