Central Nervous System Pathways
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True. The anterior and posterior spinal arteries, which originate from the vertebral arteries, provide the primary longitudinal supply but are insufficient alone. Segmental medullary and radicular arteries (like the artery of Adamkiewicz) arise from various sources (e.g., intercostal, lumbar arteries) and reinforce the blood supply, particularly to the thoracic and lumbosacral cord.
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