Review Questions 4

Review Questions 4 - Review Questions Chapter 4 Questions...

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Review Questions Chapter 4 Questions from Textbook 1. Define membrane potential (V M ) and sodium equilibrium potential (E Na ). Which of these, if any, changes during the course of an action potential? 2. What ions carry the early inward and late outward currents during the action potential? 3. Why is the action potential referred to as “all-or-none”? 4. Some voltage-gated K+ channels are known as delayed recifiers because of the timing of their opening during an action potential. What would happen if these channels took much longer than normal to open? 5. Imagine we have labeled tetrodotoxin (TTX) so that it can be seen using a microscope. If we wash this TTX onto a neuron, what parts of the cell would you expect to be labeled? What would be the consequence of applying TTX to this neuron? 6. How does action potential conduction velocity vary with axonal diameter? Why? Other review questions 7. Suppose you are recording action potentials from a neuron. How would the action potential be affected if you remove Na
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Review Questions 4 - Review Questions Chapter 4 Questions...

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