Chapters 2. Anatomy 10. Brain Blood Supply

10. Brain Blood Supply

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arteres1

All arterial supply [ 41 ] of the brain is dependent on two arterial systems: both internal carotid arteries [ 85 , 86 ] forward, and two vertebral arteries [ 86 , 87 ] or vertebrobasilar system [ 88 , 89 , 90 ] back.

These four areas are interconnected multistage including the base of the brain by the circle of Willis [ 86 , 91 ]. This anastomotic circle works as a security system, if one of the axes shows deficient blood supply other compensates for this deficiency.


arteres2
This anastomotic circle born major cerebral arteries. arteres3

Internal carotid provide two essential parts: the anterior cerebral [ 2 ] which vascularized the inner part of the cerebral hemisphere and the average brain [ 2 ] which vascularized the lateralized part of the hemisphere.

The two vertebral arteries form a common trunk (The basilar artery [ 2 ]) that will deliver the arteries to the brainstem and cerebellum. It divide after forming the two posterior cerebral arteries [ 51 ], for the occipital lobe and the ventral part of the temporal lobe. arteres4


Chapters 2. Anatomy 10. Brain Blood Supply