Neurotransmitter

As you know, postsynaptic neuron is excited by the neurotransmitter released by the presynaptic neuron at synaptic cleft. The effect of this neurotransmitter is terminated by different ways. 1. It may be degraded by the enzyme (as you mentioned), ...

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... of a threshold gradient of some factor, or possibly factors. This release should trigger the release of this hormone in the nerve axon? A type of neurotransmitter? That is released upon the threshold gradient of massive destruction. Cytokines of course would be involved as they react to the destruction ...

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... question, though. Adenosine release mechanisms in the brain are complex.[46] There is evidence that adenosine functions as a synaptically released neurotransmitter in some cases, but stress-related adenosine increases appear to be produced mainly by extracellular metabolism of ATP. It is not likely ...

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That is very inaccurate. The actual mechanism is something like this: a synaptic vesicle needs to fuse with the plasma membrane in order for the neurotransmitter to be released into the synaptic cleft. When the neuron is not firing, some vesicles are tethered to the plasma membrane(mainly through ...

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... calcium ions cause the movement of vesicles - for instance how does the influx of calcium ions into a nerve ending bring about vesicles containing neurotransmitter moving towards the presynaptic membrane? Thanks in advance

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