Intro
Agonistic Drug Effects:
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Antagonist Drug Effects:
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Part 1: Image-Mapped Tutorial
Part 2: Matching Self-Test
Part 3: Multiple-Choice Self-Test
9. Another class of drugs decreases the release of neurotransmitters from the presynaptic membrane. Evidence suggests that these drugs may activate presynaptic inhibitory heteroreceptors found at axoaxonic synapses. This action prevents influx of calcium ions and thereby inhibits the release of neurotransmitter molecules.