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ADA NBDE National Board Dental Part I

Category - NBDE

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The plateau in the cardiac action potential is caused by which of the following?

Influx of Na+
Efflux of Na+
Influx of Ca2+
Efflux of Ca2+

Explanation

Answer: C - The plateau results from a very slow influx of calcium ions, balanced against the efflux of potassium ions.

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ADA NBDE National Board Dental Part I

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ADA NBDE National Board Dental Part I

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