Item #10 of 15

Which of the following is(are) true about postsynaptic potentials (PSPs)?

A neurotransmitter must be released into the synaptic cleft.;
A neurotransmitter must bind or fit into a receptor site.;
A postsynaptic potential is a graded response.;
It affects the probability of a neuronal impulse based on its size and polarity.;
All of the above alternatives are correct;

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