What does medulla spinalis mean?
• MEDULLA SPINALIS (noun) The noun MEDULLA SPINALIS has 1 sense: 1. a major part of the central nervous system which conducts sensory and motor nerve impulses to and from the brain; a long tubelike structure extending from the base of the brain through the vertebral canal to the upper lumbar region Familiarity information: MEDULLA SPINALIS used as a noun is very rare.