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