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CNS Arterial Supply AORTIC ARCH, Segmental aa, Spinal/Beck's Syndrome…

- - - - Petrous
      - Cavernous
      - Cerebral
        
        Ophthalmic a.
        [Orbit]
        
        Central retinal a.
        (Enters via optic disc -->
        supports vision)
        
        Supratrochlear
        
        Supraorbital
        
        Middle Cerebral aa.
        [lateral surfaces of front, pari, temp
        & occpital]
        
        Lenticulostriate aa
        (feed white and gray matter)
        
        Anterior Cerebral aa.
        [Medial & Superior surfaces of
        Frontal & Parietal lobes]
        
        Anterior communicating a
        
        Posterior Communicating aa
        (CONNECTS posterior cerebral aa.)
      - Cervical
    - - Occipital
      - Posterior auricular
      - Superficial Temporal
        
        Anterior auricular
        
        Transverse facial
        
        Zygomaticoorbital
        
        Middle Temporal
      - Maxillary
        
        Infraorbital
        
        Mental
      - Facial
        
        Lateral nasal
        
        Angular
        
        Inferior Labial
        
        Superior labial
      - Superior Thyroid
      - Ascending Pharyngeal
      - Lingual
  - - - Basilar a.
        (COMPOSED OF
        R & L. Vertebral aa.)
        
        Anterior Inferior Cerebellar a (AICA)
        [caudal pons &
        anterior-inferior cerebellum]
        
        Labyrinthine a.
        [inner ear]
        
        Pontine Branches
        [pons]
        
        Superior Cerebellar a (SCA)
        [Superior cerebellum, rostral pons
        & caudal midbrain)
        
        R & L. Posterior cerebral aa.(PCA)
        [Rostral midbrain, thalamus,
        Cerebrum
        Also supplies Primary visual cortices
      - Posterior inferior cerebellar a (PICA)
        
        Posterior spinal aa
        1/3 spinal cord
      - Anterior spinal a
        (COMPOSED OF R. & L.
        medial branch <-- vertebral a.)
        •Supplies 2/3 of spinal cord