An EPSP: A) is a direct result of the opening of ligand-gated channels permeable to both Na⁺ and K⁺ ions. B) is a direct result of the opening of voltage-gated channels permeable to both Na⁺ and K⁺ ions. C) stabilizes the membrane to remain at its resting potential. D) opens voltage-gated Ca²⁺ channels in the presynaptic membrane. E) occurs when voltage-gated Cl^- channels open in a postsynaptic cell membrane.

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Quizplus · Accepted Answer

An EPSP (excitatory postsynaptic potential) is a direct result of the opening of ligand-gated channels permeable to both Na+ and K+ ions. This leads to depolarization of the postsynaptic membrane and can ultimately lead to the generation of an action potential.