Why Isn't an Action Potential Transmitted from a Postsynaptic Membrane

question 64

Multiple Choice

Why isn't an action potential transmitted from a postsynaptic membrane to a presynaptic terminal?

• A)Presynaptic terminals have no acetylcholine receptors.
• B)Presynaptic neurons do not have a resting membrane potential.
• C)Acetylcholine can only diffuse in one direction across the synaptic cleft.
• D)Synaptic vesicles in the postsynaptic membrane are inactive.
• E)Acetylcholine is destroyed too fast.

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