1) This system controls everything you do: a) Nervous system b) Olfactory system c) Endocrine system d) Respiratory system 2) Without the nervous system, you couldn’t: a) Walk  b) Think c) Breathe d) All of above  3) The nervous system is made up of these three parts: a) Brain, heart, and spinal cord b) Nerves, arteries, and veins c) Nerves, liver, and heart d) Brain, spinal cord, and nerves 4) A typical brain weighs how much? a) 3 pounds (1.4 kilograms) b) 3 ounces (85 grams) c) 3 tons (2.7 metric tons) 5) What is the biggest part of the brain? a) Cerebellum b) Cerebrum c) Brain stem 6) Which part of the brain helps keep your balance so you don’t fall flat on your face? a) Medulla oblongata b) Pituitary gland c) Cerebellum 7) The brain creates connections, or pathways, between these microscopic cells: a) Blood cells b) Tiny cell phones c) Neurons

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