KROK 1 2008 – Question 118 · KROK (Medicine) · Physiology
Vagus branches that innervate heart are being stimulated in course of an experiment. As a result of it the excitement conduction from atria to the ventricles was brought to a stop. It is caused by electrophysical changes in the following structures:
- A. Atria
- B. Atrioventricular node
- C. His’ bundle
- D. Sinoatrial node
- E. Ventricles
Hint
Think about which part of the conduction system linking the atria with the ventricles is most sensitive to acetylcholine, which slows conduction (negative dromotropic effect).
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