The Morphological Structure of the Spinal Cord Surrounded by Cerebrospinal Fluid Inside the Vertebra

Description

Centered within the vertebral canal, the spinal cord appears in transverse section with a butterfly-shaped gray matter core surrounded by concentric rings of white matter. Posterior (dorsal) horns project toward the posterior median sulcus, while the broader anterior (ventral) horns lie nearer the anterior median fissure; the central canal sits at the gray commissure. Surrounding the cord, the pia mater invests the surface, the subarachnoid space contains cerebrospinal fluid (CSF, liquor), and the dura mater forms the outer meningeal sleeve adjacent to the bony vertebra. Fine dorsal and ventral rootlets emerge laterally from the cord toward the spinal nerves. Emphasis on CSF encircling the cord makes this view useful for understanding how the subarachnoid space relates to the meninges and vertebral column, a relationship that dictates both disease spread and procedural safety. When you place a spinal anesthetic or perform a lumbar puncture, the target is the CSF in the subarachnoid space, after traversing dura and arachnoid, while avoiding direct cord injury by staying below the conus medullaris. Vascular markings over the gray and white matter also support discussion of spinal cord ischemia patterns, including the vulnerability of the anterior horns and corticospinal tracts in anterior spinal artery compromise. Use this artwork in neuroanatomy and neuroscience teaching to pair cord microanatomy (gray horns, white columns) with meningeal layers and CSF circulation, or in clinical skills materials explaining lumbar puncture, spinal anesthesia, and intrathecal drug delivery. It also suits textbooks and review articles on meningitis, subarachnoid hemorrhage, and compressive myelopathy where spatial relationships inside the backbone need to be unambiguous. Anatomical accuracy verified by SciePro's Medical Advisory Board.