What Action Is Most Responsible for the Resting Membrane Potential

question 136

Multiple Choice

What action is most responsible for the resting membrane potential in cardiac muscle cells?

• A) Movement of K⁺ through voltage-gated K⁺ channels
• B) Movement of Na⁺ through open Na⁺ channels
• C) Movement of Ca²⁺ through voltage-gated Ca²⁺ channels.
• D) Closing of Na⁺ and K⁺ voltage-gated channels

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