Fig. 7From: Angiographic anatomy of the extracranial and intracranial portions of the internal carotid arteries in donkeysDorsoventral angiogram of the common pattern of the internal carotid arteries and formation of the cerebral arterial circle of a donkey. Note the bilateral presence of caroticobasilar arteries (red arrows). 1 internal carotid artery; 2 intercarotid artery; 3 caudal communicating artery; 4 basilar arteryBack to article page