Unformatted text preview: -4 Factors That Affect Action Potential * Sodium and Potassium Ion Gated Channels * Leak of Sodium ions in * Leak of Potassium ions out * Organic Anions with Negative Charges-Equilibrium Potential = The magnitude of a cell’s membrane voltage at equilibrium * For instance, E k = -90mV and E Na = 62 mV * This means that the inside of the cell is 90mV more negative than the outside-The reality is that the resting potential is less negative because of the constant movement of Na + ions through sodium channels. -The resting potential is closer to the E k : Many open K + channels and very small open Na + channels...
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- Fall '11
- Sodium, Electric charge, K+ ion channels