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The Circle of Willis

In this tutorial, we will learn the neuroanatomy of the Circle of Willis. Key structures/terms: internal carotid arteries, middle cerebral arteries, anterior cerebral arteries, vertebral arteries, basilar artery, posterior cerebral arteries, anterior spinal artery, posterior communicating arteries, anterior communicating artery, posterior inferior cerebellar artery, anterior inferior cerebellar artery off the inferior basilar artery, superior cerebellar artery, lenticulostriate arteries, anterior choroidal artery. Finally, show the basilar perforators, pontine paramedian arteries, short pontine circumferential arteries, long pontine circumferential arteries.