The spinal cord and brain are the central part of the nervous system, and they work receiving and interpreting the signals that the peripheral system sends to them, via the nervous cell called neuron. The following are some of the attributes of each of them:
The spinal cord is a thin tubular collection of nerves protected by the vertebral column, and it runs as an extension of the CNS from the medulla oblongata in the brain to the fibrous extension known as the filum terminale, prolonged downward from the apex of the conus medullaris (Fillum terminale, online web 2006). It consists of thirty-one pair of nerves covered by three connective tissues called the meninges. It carries information via electric impulses from the arms, legs and the rest of the body, as well as from the brain to the body (Definition of spinal cord, online web; Spinal cord, from wikipedia).
It contains one hundred billion nerve cells, it is considered the most complex organ of the body and it is the centerpiece of the CNS. It is organized in three interconnected layers: the central core, limbic system and the cerebral cortex. Basic life processes such as breathing, pulse, arousal, movement, balance, sleep, and the early stage of processing sensory information are fine-tune through the central core. ...Show more