Pharmacology · single question
Local anesthetics produce their effect primarily by acting on:
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Correct answer: B. Sodium channels
- A. Local anesthetics do not primarily block calcium channels.
- B. Correct. Local anesthetics block voltage-gated sodium channels, preventing depolarization and nerve conduction.
- C. Potassium efflux relates to repolarization, not the LA mechanism.
- D. ACh receptors are the target of neuromuscular agents, not local anesthetics.