MeSH definition : Membrane-bound compartments which contain transmitter molecules. Synaptic vesicles
are concentrated at presynaptic terminals. They actively sequester transmitter molecules
from the cytoplasm. In at least some synapses, transmitter release occurs by fusion
of these vesicles with the presynaptic membrane, followed by exocytosis of their contents.;
Membrane-bound compartments which contain transmitter molecules. Synaptic vesicles
are concentrated at presynaptic terminals. They actively sequester transmitter molecules
from the cytoplasm. In at least some synapses, transmitter release occurs by fusion
of these vesicles with the presynaptic membrane, followed by exocytosis of their contents.