Question

When an electrical impulse reaches a synapse the neurotransmitters are released from

Answer 1

Explanation:

Neurotransmitters are released from the end of an Axon

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Answer 2

Synapses: how neurons communicate with each other

When an action potential reaches the presynaptic terminal, it causes neurotransmitter to be released from the neuron into the synaptic cleft, a 20–40nm gap between the presynaptic axon terminal and the postsynaptic dendrite (often a spine).