actionpotentialhandout

actionpotentialhandout - Na+ channels close, Na+ stops...

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A. Na + K + Cl - -70mv Na + K + Protein - Resting Membrane Potential Na+ concentrated outside K+ Concentrated inside Proteins inside cells B. Na + K + Cl - -70mv Na + K + Protein - Depolarization Begins Na+ gates open and sodium travels down concentration and electrical gradients. C. Na + K + Cl - -40mv Na + K + Protein - Depolarization Continues Na+ Continues to flow. K+ gates open and K+ flows out slowly along concentration but against electrical gradient D. Na + K + Cl - +50mv Na + K + Protein - Depolarization peaks
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Unformatted text preview: Na+ channels close, Na+ stops flowing in to the cell Inside of Cell is briefly Positive. E. Na + K + Cl-Na + K + Protein-Repolarization K+ continues to flow F. Na + K + Cl--80mv Na + K + Protein-Hyperpolarization K+ Channels close Na+/K+ Pump begins pumping Na+ out and K+ in Interior of Cell is now more negative than at rest Return To Resting Membrane Potential Time msec 3-70 +55 Threshold...
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actionpotentialhandout - Na+ channels close, Na+ stops...

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