Benzodiazepines produce sedation and muscle relaxation mainly by enhancing the action of which neurotransmitter?
Correct answer: C. Gamma-aminobutyric acid
- A. Dopamine
- B. Glutamic acid
- C. Gamma-aminobutyric acid
- D. Norepinephrine
Explanation
Benzodiazepines enhance gamma-aminobutyric acid activity at GABA-A receptors, increasing neuronal inhibition. Glutamate is mainly excitatory, while dopamine and norepinephrine are not the primary mediators of this drug class.
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Covers how drugs act in animals, including pharmacokinetics, pharmacodynamics, routes of administration, dosage forms, adverse effects and drug interactions. Major groups include antimicrobials, antiparasitics, analgesics, anaesthetics, anti-inflammatory drugs, hormones and cardiovascular medicines, with attention to withdrawal periods and species differences.
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