KROK 1 2021 – Question 87 · KROK (Medicine) · Physiology
Excitation processes in cardiomyocytes have been studied in an experiment. It was determined that during the phase of their rapid depolarization Na⁺ ions can additionally move through the:
- A. Li⁺ channels
- B. K⁺ channels
- C. Mg⁺⁺ channels
- D. Ca⁺⁺ channels
- E. Cl⁻ channels
Hint
Think about the voltage-gated channels that carry the slow inward current of the heart; one of them is not perfectly selective and also admits sodium.
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