proteins are the biomolecules important to the transmission of an impulse from the presynaptic membrane to the postsynaptic membrane
Gap junctions—large channel proteins that connect the pre- and postsynaptic membranes—are used in electrical synapses to transmit the action potential directly to the postsynaptic cell. Synapses are dynamic structures that can be both diminished and strengthened. Long-term potentiation and long-term depression are two mechanisms of synaptic plasticity.
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