Spinal cord : Portion of central nervous system that provides two-way conduction from the brain ; major reflex center. : A mass of nerve tissue located in the vertebral canal from which 31 pairs of spinal nerves originate.
Spinal cord : Portion of central nervous system that provides two-way conduction from the brain ; major reflex center. : A mass of nerve tissue located in the vertebral canal from which 31 pairs of spinal nerves originate.