Overview of Brainstem and Brain Blood Supply

The video tutorial explains the blood supply to the nervous system, focusing on the internal carotid and vertebral arteries. It details the subclavian and vertebral arteries, the formation of the basilar artery, and the circle of Willis. The tutorial also covers the posterior inferior cerebellar artery (PICA) and its significance, as well as the anterior and posterior spinal arteries. The internal carotid artery's role in supplying the cerebral cortex is highlighted, emphasizing its connection to the circle of Willis.

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