If an axon terminal continuously releases acetylcholine but the postsynaptic receptors are dysfunctional, which consequence follows for muscle fiber contraction?

💡 Explanation

Dysfunctional receptors prevent acetylcholine from binding effectively; therefore, even with neurotransmitter release, the signal cannot be transduced, leading to initial contraction from pre-existing stimulus, but subsequent paralysis, because synaptic transmission is blocked, rather than sustained firing.

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