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Title: The reason that an action potential is so brief is that Post by: Ojs123 on Mar 30, 2018 The reason that an action potential is so brief is that
a. a wave of repolarization immediately follows the rising portion of the spike. b. the closing of potassium gates allows the voltage difference across the neural membrane to be restored. c. the channels for sodium movement remain open. d. the sodium-potassium pump restores the electrical gradients. e. the membrane limits electrical activity. Question 2 Once a threshold is reached, a. the number of sodium gates that open depends upon the strength of a stimulus and its duration. b. a graded local potential will be unable to spread to a trigger zone of the nerve membrane. c. the resting potential of a neuron is restored. d. potassium channels in the input zone open. e. progressive opening of more and more sodium gates and the accompanying flow of sodium ions is an example of positive feedback. Title: The reason that an action potential is so brief is that Post by: crage on Mar 30, 2018 The reason that an action potential is so brief is that a. a wave of repolarization immediately follows the rising portion of the spike. b. the closing of potassium gates allows the voltage difference across the neural membrane to be restored. c. the channels for sodium movement remain open. d. the sodium-potassium pump restores the electrical gradients. e. the membrane limits electrical activity. Answer: e |