Botulinum toxin and amphetamines ___________________.
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increase the release of acetylcholine and norepinephrine from the presynaptic membrane, respectively; |
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act at axoaxonic synapses; |
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stimulate presynaptic facilitative heteroreceptors; |
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stimulate calcium ion influx; |
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all of the alternatives above are correct; |
CORRECT - Yes, each of these drugs stimulate presynaptic facilitative heteroreceptors found at axoaxonic synapses. When these drugs bind to these receptors, calcium influx occurs and the neurotransmitters, acetylcholine (botulinum toxin) and norepinephrine (amphetamines) are released from the presynaptic membrane.
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