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Compare the membrane permeability for K+ and Na in most

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Compare the membrane permeability for K+ and Na in most
In most cells the membrane at rest is much more permeable to K+ than to Na+, so the membrane potential is much closer to EK than E Na.




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    1. Quizzma Team

      The membrane permeability for K+ (potassium) is greater than that for Na+ (sodium) in most cells at rest. This is primarily due to the presence of more potassium leak channels in the cell membrane, which allows K+ to flow out of the cell more freely compared to Na+. As a result, the resting membrane potential is closer to the equilibrium potential for K+ (EK) than for Na+ (E Na). This difference is crucial for maintaining the negative resting potential of the cell, helping to balance the charges across the membrane and influencing nerve signal transmission and muscle contractions.

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