Synaptic transmission

Hello,
I am writing a synoptic essay for biology A level and I was wondering: why can't an action potential cross the synaptic cleft in electrical form? Is it something to do with insulation?
Thank you for any help!

Reply 1

Kallisto

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Original post by biology234

Are you asking why it is not possible to cross the synaptic cleft as stimulus so easily? an action potential is the electrical form of a stimulus caused by the potential difference of the Na and K ions (the ions are exchanging in the nerve cell by a sodium-potassium excange pump). This action potential can't transmit from one neuron to another as long as the ion channel receptors on the postsynaptic neurons aren't openened by neurotransmitter molecules.