Submucosa of the Small Intestine, Gross Anatomy

Description

Circular layers frame a transverse section through the vertebral canal, with vertebral bone and epidural space forming the outer boundary and the dura mater lying peripheral to the arachnoid mater and pia mater. Centrally, the spinal cord occupies the canal, with butterfly-shaped gray matter surrounded by white matter and a small central canal at the midline. Paired dorsal and ventral rootlets converge laterally to form spinal nerves, while segmental vessels track along the surface of the cord and through the meningeal coverings. Color coding separates neural tissue, meninges, and vasculature for rapid orientation. For teaching gross anatomy, this cross-sectional perspective clarifies relationships that drive real clinical decisions: the epidural space as the target for epidural anesthesia, the subarachnoid space as the site of lumbar puncture and intrathecal drug delivery, and the dural sac as the boundary relevant to CSF leaks. The arrangement of dorsal (sensory) and ventral (motor) roots provides a clean anatomic basis for radiculopathy patterns from foraminal stenosis or disc herniation. Short and concrete. You can point directly to what is being compressed. Use this artwork in neuroanatomy and clinical anatomy courses when introducing meninges, spinal cord organization, and spinal nerve formation, or in anesthesia and neurology materials explaining epidural versus spinal approaches and the risks of cord injury above L1 to L2. It also fits surgical atlases and patient education pieces covering spinal canal pathology, hematoma location (epidural vs subdural), and central cord lesions. Anatomical accuracy verified by SciePro's Medical Advisory Board.