KROK 1 2007 – Question 73 · KROK (Medicine) · Physiology

Examination of an isolated cardiomyocyte revealed that it didn’t generate excitation impulses automatically. This cardiomyocyte was obtained from:

  1. A. Atrioventricular node
  2. B. His’ bundle
  3. C. Ventricles
  4. D. Sinoatrial node
  5. E. Purkinje’s fibers
Hint

Only specialised cells of the conduction system show slow spontaneous diastolic depolarisation; think which cardiomyocytes belong to the contractile working myocardium instead.

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