Veins in a Section of the Spinal Cord

Description

Rendered in transverse section, the myelon occupies the center with a butterfly-shaped grey matter core surrounded by peripheral white matter, while a circumferential venous network courses along the pial surface. Radial intramedullary venules track inward from the periphery toward the central regions, converging near the anterior median fissure and posterior median sulcus in patterns consistent with the anterior and posterior spinal venous drainage. Longitudinal channels align superior to inferior along the cord’s surface, interconnected by bridging veins that communicate with the perimedullary plexus. Venous outflow from the spinal cord is the part many learners gloss over, yet it becomes clinically concrete in conditions like spinal dural arteriovenous fistula, where arterialized perimedullary veins and congested intramedullary venules drive progressive myelopathy. This perspective also supports surgical and endovascular planning by clarifying how radicular (segmental) veins connect the pial plexus to the epidural internal vertebral venous plexus, a valveless system that can transmit raised venous pressure or metastatic spread. Small vessels, big consequences. Use this artwork for neuroanatomy and neuroscience teaching blocks covering spinal cord meninges and vascular supply, and for neurosurgery or neuroradiology presentations that contrast arterial territories with venous drainage pathways on MRI and spinal angiography. It also fits textbook and atlas figures discussing venous congestion syndromes, cord edema, and vascular malformations. Anatomical accuracy verified by SciePro's Medical Advisory Board.