Blood Supply for the CNS

=Objectives=

Describe which parts of the brain the following arteries perfuse

 * posterior spinal arteries
 * unilateral spinal cord at level of the lesion.
 * dorsal funiculus (fasciculus gracile, cuneatus --> ipsilateral DCML sensation loss) and
 * lateral funiculus (corticospinal tract --> ipsilateral uper motor neuron signs)


 * anterior inferior cerebellar a. (AICA)


 * posterior inferior cerebellar a (PICA)


 * long circumferential branches


 * paramedian brances of the basilar A.


 * radicular arteries


 * anterior spinal arteries
 * bilateral spinal cord lesion
 * grey matter of dorsal and ventral horns --> lower motor neuron signs at level of ischemia (bilateral)
 * lateral corticospinal tract --> upper motor neuron signs inferior to level of ischemia


 * vertebral a

Anterior circulation

 * Internal Carotid
 * anterior cerebral artery
 * middle cerebral artery
 * posterior communicating artery

=Links= Circle of Willis

=References=