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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.
Vertebral artery dissection (abbreviated VAD, often vertebral dissection) is a dissection (a flap-like tear) of the inner lining of the vertebral artery, which is located in the neck and supplies blood to the brain.ertebral artery dissection is less common than carotid artery dissection (dissection of the large arteries in the front of the neck). The two conditions combined account for 10â25% of non-hemorrhagic strokes in young and middle-aged people.