We have the cervical region, the topmost portion. We have the thoracic region. Then we have our lumbar region and then we have our sacral region. So the spinal cord is broken down into four segments cervical, thoracic, lumbar and sacral. Now, the role of the spinal cord is basically to accept electrical signals from the peripheral system and send those signals to the brain as well as vice versa to receive the electrical signals from the brain and to send them out to different types of organs and tissues and muscles found inside our body. Now, the spinal cord actually is capable of expressing its own arc its own simple reflex arc without actually going into our brain.