going before another in time or order I'd like to follow up on an antecedent question from another reporter Synonyms previous, anterior, foregoing, former, precedent, preceding, priorRelated Words advance, early, premature; earliest, first, inaugural, initial, maiden, original, pioneer; preexisting; introductory, preliminary; erstwhile, whilomNear ...
Neurotransmitters are formed in a presynaptic neuron and stored in small membrane-bound sacks, called vesicles, inside this neuron. When this neuron is activated, these intracellular vesicles fuse with the cell membrane and release their contents into the synapse, a process called exocytosis.
In 1921, it was confirmed that neurons mostly communicate by releasing certain chemicals. These chemicals are called neurotransmitters. So, neurotransmitters allow the nerve impulses or signals to travel across the synapse. A synapse is a small gap or junction between two neurons, or a neuron and a muscle cell.