Spinal Cord

•The spinal cord is the part of the central nervous system that is surrounded and protected by vertebral column.
•In cross section, the spinal cord is organized as a butterfly shaped mass of gray matter surrounded by white matter.

•Gray matter of spinal cord are designated as name or romen numeral.
•The neuron cell bodies are organized into three discrete areas of the gray matter: the dorsal horn, the intermediate zone, and the ventral horn

•The CNS is made up not only of the brain, but also the spinal cord.
•The spinal cord is a thick, hollow tube of nerves that runs down the back, through the spine.

•The ventral horn contains the motor neuron bodies for the somatic motor system.
•The white matter contains many sensory tracts ascending to the brain and motor neuron axon descending from the brain