exercise_nervous_I_topic_5

exercise_nervous_I_topic_5 - The Nervous System: The Action...

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The Nervous System: The Action Potential 1.  a. The action potential changes the membrane potential from _______  mV (resting) to _______ mV and back again to the resting membrane  potential.  b. This results from a change in membrane permeability first to _______  then to _______ due to the opening of what type of ion channels?  _____________________________________ 2. a. Where is the density of voltage-gated Na +  channels the greatest?  __________________ b. What areas of the neuron generate signals that open these voltage-gated  channels? __________________________________________ c. Opening of these channels causes the membrane to  __________________ (voltage change). 3. a. If the membrane reaches the trigger point, known as  __________________, what electrical potential will be generated?  __________________________________________ b. During the depolarization phase, voltage-gated __________ channels open 
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exercise_nervous_I_topic_5 - The Nervous System: The Action...

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