Name _______________________________________ Date ________________________ Period ______

1. Name _______________________________________ Date ________________________ Period ______ QUIZ: THE NERVOUS SYSTEM Directions: Place your answers to the questions directly on this quiz. For multiple-choice questions, use the blank provided at the right to place the letter of your choice. For free-response questions, use the space provided to make your response. Make sure that what you write actually answers the question! Do not leave any questions blank or numbers naked. Good luck, learn much, and enjoy!\ 0. What is the best thing to put on a waffle? 1. What is the purpose of the nervous system? To make sure that you never feel calm B. To transmit signals to specific areas of the body To transmit signals all over the body To make organisms and fungi able to communicate _________ What part of the neuron is responsible for holding neurotransmitters? Vacuoles B. Cell body C. Axon D. Vessicles _________ 3. Why is afterhyperpolarization (undershoot) so important in a neuron? 4. What is the wrapping on the outside of the neuron that prevents the signal from spreading outside the neuron? A. Axon B. Myelin C. Dendrites D. Nephron _________ 5. Identify (write down) and explain (tell me about) two differences and two similarities between the endocrine and nervous systems. 6. What is the difference between a nerve with myelin on it, and one without? 7. What part of the brain is responsible for conscious thought? A. Cerebellum B. Cerebrum C. Pons D. Medulla _________

2. 8. The brain is surrounded by a protective membrane called the meninges. An infection of the meninges is known as meningitis. This can cause swelling of the meninges, which puts pressure on the brain. What do you think might be some symptoms of this disease? 9-12. Use the diagram of the neuron below to answer questions nine through twelve. On the neuron to starboard, indicate where the most sodium would be stored when the neuron is at rest. On the neuron to starboard, indicate where the most potassium would be stored when the neuron is at rest. What special protein moves the potassium and sodium around to keep them in these locations? 12. Label the terminal dendrites on the neuron. 13. In the squid, there is a very large nerve cell called the squid giant axon (SGA). The diameter of the axon can be up to 1mm and can be seen with the naked eye. The axon is unmylenated, but it still a very fast nerve. Why do you think it can be so fast? 14. Name at least two things that can start an action potential in a neuron. 15. What is the space between two nerve cells, and what is its purpose?