Hello I'm nerve system, the brain, spinal cord, and a complex network of nerves. This system sends messages back and forth between the brain and the body. The brain is what controls all the body's functions. The spinal cord runs from the brain down through the back. : the spinal cord, the medulla, the pons, the cerebellum, the midbrain, the diencephalon, and the cerebral hemisphere plus I wish to date arteries