1.a sudden surge of energy in one direction. 2.part of the central nervous system that is enclosed in the spinal column. 3. the brain and the spinal cord. 4. the largest part of the brain, responsible for thinking and moving. 5. connection between the spinal cord and the upper parts of the brain. 6. part of the brain stem that controls involuntary body functions. 7.part of the brain that coordinates movement. 8.the nerves throughout the body. brain stem central nervous system cerebellum cerebrum electrical impulse medulla peripheral nervous system spinal cord