1. A nerve impulse cannot jump from one neuron to another. 2. The brain and spinal cord make up the central switchboard ,or coordinating center of the Endocrine system. 3. Reflexes are involuntary, very quick , and help protect the body from further harm. 4. The brain is composed of cerebellum , cerebun , and medulla oblongata. 5. The autonomic system is concerned with the movements of the body's head,trunk,and limbs.
