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Why doesn't the maximal membrane voltage (at the peak of the action potential) change with altered...

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Medical Sciences

Why doesn't the maximal membrane voltage (at the peak of theaction potential) change with altered potassium?

What happens to the resting membrane potential inhyperkalemia?

What happens to the firing rate in hyperkalemia?

Explain.

Thank you!

Answer & Explanation Solved by verified expert
3.6 Ratings (461 Votes)
The decrease in Vmax causes a slowing ofimpulse conduction through the myocardium and a prolongation ofmembrane depolarization as a result the QRSduration is prolonged As potassium levelsincrease further the resting membranepotential continues to become less negative and    See Answer
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