Steps in chemical synaptic transmission
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step 2
Calcium channels in the axon terminal are opened by depolarization
step 4
Calcium induces synaptic vesicles to fuse with the presynaptic membrane.
step 3
Calcium ions flow into the neuron through the open channels.
step 1
Presynaptic axon terminal is depolarized by the action potential
step 6
Binding of neurotransmitter causes channels to open in the neuron, depolarization the neuron, which is an excitatory postsynaptic potential (EPSP).
step 5
Neurotransmitters are released into the synaptic cleft and bind with postsynaptic receptors.