ABEM (EDX) Practice Questions - American Board Of Electrodiagnostic Medicine Certification Exam

What is the primary ion responsible for the depolarization phase of a peripheral nerve action potential?

Sodium (Na+) influx through voltage-gated channels Potassium (K+) efflux through voltage-gated channels Calcium (Ca2+) influx through voltage-gated channels Chloride (Cl-) influx through ligand-gated channels

Correct Answer:

Sodium (Na+) influx through voltage-gated channels

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