Which of the Following Pairs Concerning Action Potentials in Cardiac

question 125

Multiple Choice

Which of the following pairs concerning action potentials in cardiac muscle is mismatched?

• A) Opening of Na⁺ channels - depolarization
• B) Closing of Ca²⁺ channels - plateau phase
• C) Opening of K⁺ channels - rapid repolarization
• D) Closure of Na⁺ channels - early repolarization
• E) Opening of Ca²⁺ channels - plateau phase

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