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DQ1 Describe the events that must occur to generate an AP. Relate the sequence of changes...

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Medical Sciences

DQ1 Describe the events that must occur to generate an AP. Relatethe sequence of changes in permeability to the changes in ionChannels, and explain why the AP is an all or none phenomenon .

DQ 2 What constitutes the blood brain barrier?

DQ3. List four ways in which the CNS is protected?

Answer & Explanation Solved by verified expert
3.5 Ratings (327 Votes)
1 Action potential is the mechanism of transmission of impulse through an excitable cell by rapid changes in the resting membrane potential and finally restore it Phases in action potential generation include depolarization phase and repolarization phase Events in action potential Resting state At resting membrane potential all voltage gated ion channels like Na and K channels are closed This makes the axon at resting membrane potential of 70 mV Depolarization phase Stimulus cause the axon membrane potential to reach to the threshold potential 55mV Then the voltage gated Na channels    See Answer
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