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Responses should be about a paragraph long. Be as detailed as you can. All responses must be in your own words. Using language directly from the text, the lectures, an online source, or another student’s response is considered plagiarism and will result in a score of 0. 1. Explain why a cell cannot fire two action potentials immediately after each other (in other words, both within 1 ms).2. Describe what would happen in someone’s brain if oligodendrocytes started dying.3. Explain the driving forces for Na+ and K+ ion movement across the cell membrane during an action potential and why the resting membrane potential is critical in this process.4. Explain the role of neurotransmitters in nerve signal transmission and the different effects of glutamate and GABA.5. Explain how temporal and spatial summation would be affected if selective neurons died or if they began sending signals more slowly and what the consequences would be for a given neural network.6. Explain how the CNS and PNS originate during neurulation.