Benzo's activate the BLANK receptor causing sedation.

Benzo's activate the BLANK receptor causing sedation.

• A. NMDA
• B. Dopamine
• C. Serotonin
• D. GABA

Answer: (D)

Benzodiazepines produce sedation by enhancing GABAergic inhibition in the brain. They bind to a specific site on the GABA-A receptor and act as positive allosteric modulators, increasing the effect of GABA when it binds. This leads to more chloride influx, hyperpolarizing neurons, and decreased neuronal excitability. The net result is central nervous system depression and sedation. This mechanism is distinct from actions on NMDA (glutamate) receptors or direct effects on dopamine or serotonin receptors, which are not the primary pathways through which benzodiazepines cause sedation. The GABA-A receptor pathway is the key target for the sedative, anxiolytic, anticonvulsant, and muscle-relaxant effects of these drugs.

Benzodiazepines produce sedation by enhancing GABAergic inhibition in the brain. They bind to a specific site on the GABA-A receptor and act as positive allosteric modulators, increasing the effect of GABA when it binds. This leads to more chloride influx, hyperpolarizing neurons, and decreased neuronal excitability. The net result is central nervous system depression and sedation.

This mechanism is distinct from actions on NMDA (glutamate) receptors or direct effects on dopamine or serotonin receptors, which are not the primary pathways through which benzodiazepines cause sedation. The GABA-A receptor pathway is the key target for the sedative, anxiolytic, anticonvulsant, and muscle-relaxant effects of these drugs.