Cross-Section of the Spinal Cord Revealing the Veins

Description

Centered in the section, the butterfly-shaped substantia grisea surrounds the canalis centralis and is framed by peripheral substantia alba, with a posterior (dorsal) median sulcus and anterior (ventral) median fissure orienting the cord. Small radial veins and venules course centrifugally from the gray matter into the white matter, converging toward pial and surface venous channels at the cord periphery. Dorsal (posterior) and ventral (anterior) rootlets emerge laterally, with the dorsal horn positioned posterolaterally and the broader ventral horn anterolaterally. Blue myelinated tract bundles in the funiculi provide a clear backdrop for the intramedullary venous pattern. A clean transverse anatomy. Venous microanatomy matters when you need to explain why spinal cord injury and myelopathy do not respect neat arterial territories, because venous outflow obstruction can produce central cord edema and patchy, longitudinal signal changes on MRI. This cross-section supports teaching around congestive myelopathy from spinal dural arteriovenous fistula, where arterialized perimedullary veins elevate venous pressure, impair capillary perfusion, and preferentially affect the gray matter with progressive gait disturbance and sphincter symptoms. It also maps the pathways implicated in intramedullary hemorrhage and venous infarction, and helps correlate dorsal versus ventral root involvement with sensory or motor findings in compressive lesions. Use this plate in neuroanatomy and neurovascular teaching modules to pair cord internal anatomy with the venous network, or in neuroradiology and neurosurgery content discussing perimedullary venous congestion, AV shunts, and surgical or endovascular planning along the pial surface. It also fits well in spinal cord pathology chapters where you need a transverse reference for tract location alongside venous drainage patterns. Anatomical accuracy verified by SciePro's Medical Advisory Board.