Blood Supply to the Brain - Circle of Willis

The video tutorial explains the blood supply to the brain, focusing on the vertebrobasilar system and the Circle of Willis. It covers the origins of major arteries from the aorta, the bifurcation of the common carotid arteries, and the role of the subclavian arteries. The vertebral arteries and their branches, including the posterior inferior cerebellar artery, are discussed. The basilar artery's formation and its branches are detailed, leading to the Circle of Willis, which is a crucial anastomosis for cerebral circulation.

What structures are supplied by the posterior inferior cerebellar artery (PICA)?

Identify the branches that come off the basilar artery.

Discuss the role of anastomosis in the context of the circle of Willis.

What are the potential consequences of a blockage in the cerebral arteries?