During the rapid depolarization phase of an action potential, the plasma membrane is more permeable to which of the following ions? A) sodium (Na⁺) B) potassium (K⁺) C) chloride (Cl ^-) D) calcium (Ca⁺⁺) E) phosphate (PO₄^-)

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Quizplus · Accepted Answer

During the rapid depolarization phase of an action potential, the plasma membrane's permeability to sodium (Na+) ions increases significantly, allowing these ions to rush into the cell, which leads to the depolarization of the membrane.

During the Rapid Depolarization Phase of an Action Potential, the Plasma