It is the presynaptic receptors that are believed to function as autoreceptors ( cf . studies done with pindolol ).
2.
They are located mostly on the presynaptic membrane and contain a single black widow spider venom that binds to presynaptic receptors and induces massive neurotransmitter release.
3.
Stimulants increase the concentration of synaptic dopamine by activating certain presynaptic receptors ( i . e ., TAAR1 ) or by blocking or altering the function of DAT, VMAT2 ) in the presynaptic neuron.
4.
They maintain a normal membrane potential, contain presynaptic receptors, translocate metabolites and ions, and when depolarized, release multiple neurotransmitters ( including acetylcholine, amino acids, catecholamines, and peptides ) in a Ca2 +-dependent manner.
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