1 A) About 40 m/s. B) Between 25 and 35 m/s. C) Between 15 and 20 m/s. D) About 10 m/s. 2 A) About 40 m/s. B) Between 25 and 35 m/s. C) Between 15 and 20 m/s. D) About 10 m/s. 3 A) Cooling increased the duration of the CAP. B) Cooling did not change the duration of the CAP. C) Cooling decreased the duration of the CAP. 4 A) Cooling decreased the time delay. B) Cooling did not change the time delay. C) Cooling increased the time delay. 5 A) Cooling decreased conduction velocity. B) Cooling did not change the conduction velocity. C) Cooling increased conduction velocity. 6 A) Cooling decreases the rate of enzymic action. B) Cooling does not change the rate of enzymic action. C) Cooling increases the rate of enzymic action. 7 A) Cooling increases the rate that channels open and close. B) Cooling does not change the rate that channels open and close. C) Cooling decreases the rate that channels open and close. 8 A) The channels open and close slower in the cold, so the resultant membrane potential change takes place slower. B) The channels open and close slower in the cold, so the resultant membrane potential change takes place faster. C) The channels open and close slower in the cold, but this should not affect the rate of membrane potential change. 9 A) The time course of the action potential will be decreased. B) The time course of the action potential will be increased. C) The time course of the action potential will not be changed. 10 A) Cooling increases the time for spikes to travel between nodes, so conduction velocity will be slower. B) Cooling increases the time for spikes to travel between nodes, so conduction velocity will be faster. C) Cooling increases the time for spikes to travel between nodes, but this will not affect the conduction velocity of the action potential down the axon.
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