The P wave of an electrocardiogram represents:
Show answer and explanation
Correct answer: Atrial depolarization
The P wave reflects depolarization of the atria. This electrical event leads to atrial contraction.
Keep practicing
More Exercise Effects on Heart questions
- Which factor primarily determines diastolic blood pressure?
- Mean arterial pressure is best approximated by:
- Which vessel has the highest blood pressure?
- Pulse pressure is defined as the difference between:
- The primary site of exchange of gases and nutrients is the:
- Which mechanism contributes most to venous return during exercise?