It is a small spherical sac found in the cytoplasm and it has a terminal button for a pre-synaptic neuron and it has molecules of the neurotrans. The transmitter will be released into the synaptic cleft with the nerve impulse when the impulse arrives on the terminal button.
SYNAPTIC VESICLE: “After many researches, the doctors found out that the synaptic vesicle is just a small spherical sac that it is found in the cytoplasm. “