ABSTRACT
The spinal cord derives its blood supply from a single anterior spinal artery (ASA), paired posterior spinal arteries (PSA), and by the communicating segmental arteries and the pial plexus.
ASA Single artery formed at the foramen magnum by the union of each vertebral artery. Blood flows centrifugally supplying the anterior two-thirds of the spinal cord in front of the posterior grey column.
