Question

Do neurotransmitters carry the nerve impulse across the synapse?

Answer 1

Yes they do.

Explanation:

The action potential can't jump from one neuron to the next. So the message(nerve impulse) is transmitted across synapse in the form of chemical messenger called neurotransmitters.

These neurotransmitters are present in synaptic vesicles. When synaptic vesicles fuse with the presynaptic membrane then these neurotransmitters are relesed into the synaptic cleft.

The neurotransmitters then attach to the protein receptors of postsynaptic membrane, changing its permeability for certain ions i.e `Na^+` IONS and thus start an action potential in the postsynaptic neuron.