Local anesthetics block conduction of action potentials in sensory neurons by
A)inhibiting the release of acetylcholine.
B)binding to potassium channels.
C)binding to sodium channels.
D)binding to calcium channels.

Question

Quizplus · Accepted Answer

Local anesthetics such as lidocaine bind to voltage-gated sodium channels on sensory neurons, preventing the influx of sodium ions required for the generation of action potentials. This blocks transmission of signals from the affected area to the brain, resulting in temporary anesthesia.

Local Anesthetics Block Conduction of Action Potentials in Sensory Neurons