Exam questionKROK 1Medicine ยท 2020
During emotional excitation the heart rate of a 30-year-old person reached 112/min. The increased heart rate was caused by a change that occurred in a certain structure of the cardiac conduction system. Name this structure:
Answer options
- Purkinje fibers
- His bundle
- His bundle branches
- Sinoatrial node
- Atrioventricular node
Correct answer
Sinoatrial node
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