Calcium ions cause the vesicles containing neurotransmitter to fuse with the axon terminals and release the neurotransmitter into the synaptic cleft. The neurotransmitters bind to the receptors on the post synaptic membrane, which generate action potential in the post-synaptic cell. Hence, option C is correct.
Calcium ions cause the vesicles containing neurotransmitter to fuse with the axon terminals and release the neurotransmitter into the synaptic cleft. The neurotransmitters bind to the receptors on the post synaptic membrane, which generate action potential in the post-synaptic cell. Hence, option C is correct.