What do the colors on the flag of Norway mean? Credit: Thinkstock Images Stockbyte Getty Images. The Union Jack is composed of the flags of three patron saints layered one over the other. The central red cross on a white field is the flag of St. George, the patron saint of England.
Synaptic vesicles contain thousands of neurotransmitter. The  neurotransmitters are packed into a small membrane bound synaptic  vesicles. There are thousands of neurotransm â¦ itter molecules.
The process of using and reusing synaptic vesicles is a fascinating one. Vesicles are manufactured in the cell body, not in the endfoot. Fresh vesicles, filled with neurotransmitter substance and various complexes of enzymes, are shipped from the cell body down the axon to the endfeet of the neuron.