Which of the Following Is Responsible for the Falling Phase

question 99

Multiple Choice

Which of the following is responsible for the falling phase of an action potential?

• A) opening of Na⁺ gates
• B) Na⁺-K⁺ pump restoring the ions to their original locations
• C) greatly increased permeability to K⁺
• D) ATP-ase destroying the energy supply that was maintaining the action potential at its peak.
• E) none of these answers.

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