Potassium channel 3 0 50 depolarizavon extracellular

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Unformatted text preview: – K+ Membrane potenVal (mV) +50 Na+ Na+ + + Plasma membrane – – – – – – – – Cytosol – – Sodium channel + + – – K+ 4 Threshold 1 ResVng potenVal Time AcVvaVon gates Potassium channel + + + + + + + + ResVng state 2 –100 Extracellular fluid 3 0 –50 2 DepolarizaVon 1 AcVon potenVal + + – – InacVvaVon gate 5 1 The role of voltage ­gated ion channels in the generaVon of an acVon potenVal Na+ Na+ – – – – – – – – + + + + + + + + K+ 3 Rising phase of the acVon potenVal Na+ + + + + – – – – 2 Na+ + + + + – – – – K+ Membrane potenVal (mV) +50 + + + + + + + + Plasma membrane – – – – – – – – Cytosol 1 ResVng state 2 –100 Na+ Threshold ResVng potenVal Time + + + + + + – – Sodium channel – – – – K+ 4 5 1 AcVvaVon gates Potassium channel 3 0 –50 DepolarizaVon Extracellular fluid AcVon potenVal InacVvaVon gate 1 The role of voltage ­gated ion channels in the generaVon of an acVon potenVal Na+ Na+ – – – – – –...
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This note was uploaded on 02/04/2014 for the course BIOG 1440 taught by Professor Owens during the Fall '10 term at Cornell University (Engineering School).

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