Carotid-basilar anastomosis: primitive hypoglossal artery.
D000368:Aged; D001488:Basilar Artery / Q000002:abnormalities*; D002339:Carotid Arteries / Q000002:abnormalities*; D002533:Cerebral Angiography; D002536:Cerebral Arteries / Q000196:embryology; D005260:Female; D006801:Humans