Release of neurotransmitters from nerve cells

Release of neurotransmitters from nerve cells
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Release of neurotransmitters from the presynaptic terminals of nerve cells and their accumulation in the synapses, following stimulation with numerous action potentials. The increase of red and yellow signals indicate this increase. The period of stimulation is shown by the presence of the word 'stim' on the screen. After cessation of the stimulus, the neurotransmitters are relatively slowly taken back up into the cells by a process of endocytosis. This re-uptake is slower than the release by exocytosis. Consequently, the cell will eventually reach a point where no more presynaptic vesicles are available to be released and the cell can transiently no longer respond to the stimulus.

Collection: Wellcome Images Copyrighted work available under Creative Commons by-nc-nd 2.0 UK: England

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 - Uploaded at 07.03.2012
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