The Membrane Potential, Voltage-Gated Ion Channels and Action Potentials

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Action Potentials 1 - Resting Membrane Potential:

This is the first tutorial in a series on Action Potentials. This video looks at how the Na+/K+ ATPase Ion Transporter sets up a voltage across a membrane.

Action Potentials 2 - Voltage-Gated Ion Channels:

This second tutorial looks at how the Voltage Gated Na+ & K+ Ion channels change the voltage across the membrane of a cell and thus produce an action potential.

Action Potentials 3 - Action Potential Propagation:

This is the third tutorial in a series on Action Potentials. This video looks at how the an action potential propagates across a membrane, such as that of an axon. 

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