Which aspect of the spinal cord's blood supply is true?

The spinal cord's blood supply is accurately characterized by the existence of a singular anterior artery, known as the anterior spinal artery, which runs along the anterior aspect of the spinal cord. This artery is crucial because it supplies blood to the anterior two-thirds of the spinal cord and major pathways involved in motor function and sensory transmission. The presence of this singular artery is vital for maintaining the metabolic needs of these critical nerve structures.

In addition to the anterior spinal artery, the spinal cord also receives contributions from posterior spinal arteries, which supply the posterior third of the cord responsible for sensory functions. However, the emphasis on the singular anterior artery highlights its major role and the distinct blood supply structure of the spinal cord.

Understanding this vascularity is important in the context of intraoperative monitoring because any compromise to this blood supply can lead to significant neurological deficits, underscoring the importance of maintaining adequate perfusion during surgeries involving the spinal cord.