speculate on why the increased leakage of sodium ions would activate action pote
ID: 3476244 • Letter: S
Question
speculate on why the increased leakage of sodium ions would activate action potentials. How would changes in the conformations of the sodium leakage channels increase rates of diffusion through the membrane? The postassium voltage gated channels work normally and repolarize/hyperpolarize the membrane as during a single action potential. Why is it that the cell cannot have a second action potential for milliseconds to seconds after the first action potential during the hyperpolarized stage? Diagram the three stages of the action potenial. On this graph, show relative conductance of sodium and potassium during the three stages. Describe which way sodium flows throughout theses three cycles.
Explanation / Answer
1. Increased leakage of sodium ions causes through FUNNY CHANNELS is a physiological phenomenon . This follows the HYPERPOLARIZATION PHASE. It is also know as funny current. Thus the leakage of Na channels brings the action potential to a threshold level at which an action potential is initiated.
2. Increased leakage of Na channels increases the efficacy of transport of CARRIER PROTEINS. These carrier proteins help in FACILITATED DIFFUSION.
3. Because the cell is in its refractory period.
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