Synaptic Transmission

Item #15 of 15

Where may neurotransmitters be found in the presynaptic membrane region?

along the release zone;

in clusters of small vesicles;

in large vesicles scattered throughout the cytoplasm;

as free molecules throughout the cytoplasm;

all of the alternatives are correct;

CORRECT - Yes, small neurotransmitters are most often found in clusters of small vesicles along the release zone, whereas large neurotransmitters are found free or in large vesicles throughout the cytoplasm.

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		along the release zone;
		in clusters of small vesicles;
		in large vesicles scattered throughout the cytoplasm;
		as free molecules throughout the cytoplasm;
		all of the alternatives are correct;