Biology for IGCSE & O level - Coordination And Response (Section 1 - No. 26)
What triggers the release of neurotransmitters into the synapse?
The arrival of an action potential at the axon terminal
The binding of a hormone to a receptor
The diffusion of the neurotransmitter across the synaptic cleft
The binding of the neurotransmitter to a postsynaptic receptor
Explanation
An action potential arriving at the axon terminal triggers the release of neurotransmitters.
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