Which phase of the ventricular action potential is due to calcium influx through L-type channels?
Answer and explanation
Correct answer: C. Phase 2
- Step 1: The plateau is maintained by calcium entry balanced by potassium efflux. Answer: Phase 2. Why not the others: Phase 0 is sodium influx, phase 1 is early repolarization and phase 3 is potassium efflux.
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