Physics · Human Physiology
A patient's electrocardiogram (ECG) reveals a significantly prolonged PR interval, which indicates a delayed electrical conduction from the atria to the ventricles. Which component of the heart's conduction system is most likely dysfunctional?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Sinoatrial (SA) node
- 2Atrioventricular (AV) node✓
- 3Bundle of His
- 4Purkinje fibers
Correct answer
Atrioventricular (AV) node
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