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.
In general, the term vesicle refers to a small sac or cyst that contains fluid or gas. In cell biology, vesicle refers to the bubble-like membranous structure that stores and transports cellular products, and digests metabolic wastes within the cell. The cell forms vesicles during exocytosis, endocytosis, and intracellular transport. Vesicles may be produced artificially and are referred to as lyposomes. Some of their functions are associated with metabolism, transport, storage of food and enzymes, and buoyancy. There are different forms of vesicles: vacuoles, lysosomes, transport vesicles, secretory vesicles (e.g. synaptic vesicles), extracellular vesicles (e.g. exosomes, microvesicle, etc.), and gas vesicles. Word origin: Latin vÄsÄ«cula, diminutive of vÄsÄ«ca, bladder, blister See also: organelle; Related term(s): Neurotransmitter vesicle; Biliary vesicle