KROK 1 2017 – Question 65 · KROK (Medicine) · Physiology
Investigation of an isolated cardiac myocyte determined that it does not generate excitation impulses automatically, which means this cardiac myocyte was obtained from the following cardiac structure:
- A. Ventricles
- B. Sinoatrial node
- C. His’ bundle
- D. Atrioventricular node
- E. Purkinje’s fibers
Hint
Ask which regions of the heart contain cells capable of spontaneous diastolic depolarization, and which hold cells that must wait for an impulse to arrive from elsewhere.
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