Neurology Book

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Neurovascular AnatomyAka: Cerebral Vessel, Internal Carotid Artery, Middle Cerebral Artery, Anterior Cerebral Artery, Anterior Communicating Artery, Basilar Artery, Basilar Apex, Vertebrobasilar Artery, Vertebrobasilar Junction, Anterior Spinal Artery, Posterior Inferior Cerebellar Artery, Anterior Inferior Cerebellar Artery, Superior Cerebellar Artery, Posterior Cerebral Artery, Posterior Communicating Artery, Circle of Willis

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  1. Anterior Circulation
    1. Main Source: Two Internal Carotid Arteries
    2. Internal Carotid Arteries divide to form
      1. Anterior Cerebral Artery
      2. Middle Cerebral Artery
    3. Function
      1. Majority of cerebral circulation
      2. Obstruction: Contralateral motor and sensory deficit
        1. See Anterior Cerebral Artery CVA
        2. See Middle Cerebral Artery CVA
  2. Posterior Circulation
    1. Main Source: Two Vertebral Artery
    2. Vertebral arteries combine to form Basilar Artery
      1. Basilar divides to form posterior cerebral arteries
    3. Function
      1. Supplies cerebrum, brain stem, cerebellum
      2. Obstruction: Vision loss and Vertigo
        1. See Vertebrobasilar CVA
        2. See Posterior Cerebral Artery CVA
        3. See Posterior Inferior Cerebellar Artery CVA
  3. Collateral Circulation: Circle of Willis
    1. Anterior Communicating Artery
      1. Connects anterior cerebral arteries together
    2. Posterior communicating arteries (2)
      1. Connects each internal carotid to Basilar Artery

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