KROK 1 2008 – Question 92 · KROK (Medicine) · Physiology
An isolated cell of human heart automatically generates excitement impulses with frequency of 60 times per minute. This cell was taken from the following heart structure:
- A. Atrium
- B. Ventricle
- C. Atrioventricular node
- D. His’ bundle
- E. Sinoatrial node
Hint
Recall the gradient of automaticity along the conduction system and which pacemaker has an intrinsic rate matching the normal resting heart rate.
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