The spinal cord is partially divided into right and left sides by the anterior median fissure and posterior median sulcus. The procedure is used to diagnose pathologies and to introduce antibiotics, contrast media, anesthetics, and chemotherapeutic drugs. Internal Anatomy of the Spinal Cord a. In the center of the spinal cord is the central canal, which runs the length of the spinal cord and contains cerebrospinal fluid. The spinal cord conveys sensory and motor information by way of the ascending and descending tracts, respectively.
Paralysis is produced when the virus destroys motor neuron cell bodies.