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. So this arc looks something like this. So let's suppose I pinch myself and what happens is the receptors on my finger basically translate that pressure into an electrical signal which is picked up by the sensory neuron. And the sensory neuron basically travels to the back portion of our spinal cord known as the Doral supportion.