Flumazenil is the antidote to benzodiazepines because it antagonizes which receptor?

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Multiple Choice

Flumazenil is the antidote to benzodiazepines because it antagonizes which receptor?

Explanation:
Benzodiazepines enhance the inhibitory action of GABA at the GABA-A receptor, which is a chloride channel. By binding to a specific benzodiazepine site on that receptor, they increase GABA's effect, leading to CNS depression, sedation, and anticonvulsant effects. Flumazenil acts as a competitive antagonist at that benzodiazepine-binding site, blocking benzodiazepine action and reversing their effects. The other receptors listed are not involved in this mechanism—NMDA receptors are glutamate receptors, while dopamine and serotonin receptors are targets of other drug classes. So the antidote works by blocking the benzodiazepine site on the GABA-A receptor.

Benzodiazepines enhance the inhibitory action of GABA at the GABA-A receptor, which is a chloride channel. By binding to a specific benzodiazepine site on that receptor, they increase GABA's effect, leading to CNS depression, sedation, and anticonvulsant effects. Flumazenil acts as a competitive antagonist at that benzodiazepine-binding site, blocking benzodiazepine action and reversing their effects. The other receptors listed are not involved in this mechanism—NMDA receptors are glutamate receptors, while dopamine and serotonin receptors are targets of other drug classes. So the antidote works by blocking the benzodiazepine site on the GABA-A receptor.

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