Blood supply of CNS


Cerebrum:
Arterial supply:1)anterior cereblar.2)middle cereblar.3)inferior cereblar.


Venous drainage:1)external cereblar.2)internal cereblar.


Corpus callosum:
Arterial supply:1)anterior cerebral.

Venous drainage:1)callosal veins 2) callosocingulate veins.


Internal capsule:
Arterial supply:1)anterior cereblar.2)middle cereblar.3)inferior cereblar.

Mid brain:
Arterial supply:posterior cerebral.

Pons:
Arterial supply:pontine branch of basilar artery.

Medulla:
Arterial supply:1)medullary branches of vertebral artery2)posterior inferior cerebellar.

Cerebellum:
Arterial supply:1)posterior cerebellar2)anterior inferior cerebellar3)posterior inferior cerebellar.


Thalamus:
Arterial supply:1)mainly posteriomedial and posterolateral branches of posterior cerebral.2)partly anteromedial central branches.




Spinal cord:
Arterial supply:1)anterior spinal 2)posterior spinal3)spinal branches of vertebral,deep cervical,posterior intercostal and lumber arteries.


Venous drainage:veins forms six plexuses which join internal vertebral venous plexus.