The spinal cord (lat. medulla spinalis - spinal tube, telencephalon) is a part of the brain, represented by three pairs of medulla oblongata (IX - XII nerve segments), and located in the back of the medulla oblongata and spinal cord. This is a large area of the nervous system, located on the posterior edge of the medulla oblongata sulcus of the spinal cord between its transverse and anterior sulci. Etymology The name "medulla" is borrowed from ancient physicians,