the sense organs. II. Answer the questions by writing True or False. If it is false, replace the underlined word with the correct word to make the statement correct. 1. The nervous system is the control system of the body. 2. The nerve cells is the basic unit of the nervous system. 3. The brain is found all over your body. 4. The brain has three main parts : cerebrum, cerebellum and the medulla 5. The spinal cord bridges impulse between the brain and the body. oblongata.​