During which component of an electrocardiogram (ECG) do the ventricles contract?Multiple choice question.P waveST segmentT waveQRS complex
Question
During which component of an electrocardiogram (ECG) do the ventricles contract?
- P wave
- ST segment
- T wave
- QRS complex
Solution
Answer Breakdown
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Identifying the Components: The electrocardiogram (ECG) has several key components that reflect different electrical activities of the heart:
- P wave: Represents atrial depolarization.
- QRS complex: Represents ventricular depolarization.
- T wave: Represents ventricular repolarization.
- ST segment: Represents the period between depolarization and repolarization of the ventricles.
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Focusing on Ventricular Contraction: The contraction of the ventricles corresponds specifically to the depolarization phase, which is captured by the QRS complex. During this time, the electrical signal causes the ventricles to contract, effectively pumping blood out of the heart.
Final Answer
The ventricles contract during the QRS complex of an electrocardiogram (ECG).
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