Arteries and viens form a network of oxygen supply through blood from heart to brain. While arteries carry orxygen rich blood, veins carry depleted blood back to lungs and heart. The Arteriovenous Malformation is a condition caused by abnormal tangling of connecting arteries and veins, because of which blood flow and oxygen circulation is disrupted. The blood vessels that for Arteriovenous Malformation can rupture, If it happens in brain it can cause hemmohage, stroke or brain damage.