statement 2 and 3 are false because a synapse may or may not be having a synaptic cleft.It is not mandatory and transmission across synapse is not similar to impulse conduction along an axon because that is a nerve impulse conduction mediated by influx of Na ions while in the synapse it is a chemical transmission mediated by influx of Calcium ions.
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Answer:
statement 2 and 3 are false because a synapse may or may not be having a synaptic cleft.It is not mandatory and transmission across synapse is not similar to impulse conduction along an axon because that is a nerve impulse conduction mediated by influx of Na ions while in the synapse it is a chemical transmission mediated by influx of Calcium ions.