plasma membrane cytosol

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Unformatted text preview: – – + + + + + + + + + + + + + + + + – – K+ 3 – – – – – – K+ Rising phase of the acVon potenVal 4 Na+ + + + + – – – – + + – – – – K+ Membrane potenVal (mV) +50 Na+ + + Na+ + + Plasma membrane – – – – – – – – Cytosol – – Sodium channel ResVng state 2 + + – – K+ 4 Threshold 1 ResVng potenVal Time AcVvaVon gates Potassium channel + + + + + + + + 3 0 –50 2 DepolarizaVon 1 AcVon potenVal –100 Extracellular fluid Na+ Na+ + + – – InacVvaVon gate 5 1 Falling phase of the acVon potenVal The role of voltage ­gated ion channels in the generaVon of an acVon potenVal Na+ Na+ – – – – – – – – + + + + + + + + + + + + + + + + – – K+ 3 – – – – – – K+ Rising phase of...
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