Part of the central nervous system located in the vertebral canal continuous with and caudal to the brain; demarcated from brain by plane of foramen magnum. It is composed of an inner core of gray matter in which nerve cells predominate, and an outer layer of white matter in which myelinated nerve fibers predominate, and surrounds the central canal. (CUMBO).

http://upload.wikimedia.org/wikipedia/commons/5/58/Spinal_cord_direv.svg

TODO - add superclass to unify with VNC?

Part of the central nervous system which descends from the hindbrain within the vertebral column.[AAO]

uberon

spinal medulla, fissura cerebro-cerebellaris, fissura cerebrocerebellaris, medulla spinalis, SpC, cerebro-cerebellar fissure, cerebrocerebellar fissure, spinal cord structure

(...) at some stage of its development, every chordate exhibits five uniquely derived characters or synapomorphies of the group: (...) (4) a single, tubular nerve cord that is located dorsal to the notochord (...) (reference 1); The neural tube is destined to differentiate into the brain and spinal cord (the central nervous system) (reference 2).[well established][VHOG]

UBERON:0002240

http://purl.obolibrary.org/obo/uberon.owl, http://purl.obolibrary.org/obo/cl.owl

http://purl.obolibrary.org/obo/UBERON_0000955

http://purl.obolibrary.org/obo/UBERON_0000955

• brainstem

• spinal cord interneuron

• future spinal cord

• spinal cord neural crest