Human nervous system, animation. The central nervous system consists of the brain (grey) and the spinal cord (yellow, running down back). The peripheral nerves (yellow) transmit nerve impulses to and from the rest of the body to the CNS. The lungs and main arteries and veins of the chest are also seen.HD master is flattened onto a black background, as seen in this preview. The original file has a transparent alpha channel and is available as the HD master of clip K003 3790.