What is the T wave?

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Prepare for the PLTW Biomedical Science Test. Study with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready for your exam!

Multiple Choice

What is the T wave?

Explanation:
The T wave shows ventricular repolarization, which means the ventricles are resetting and relaxing after they’ve contracted to pump blood. It appears after the QRS complex, which is the event of ventricular contraction. The P wave represents atrial depolarization (atrial contraction), so it doesn’t describe the ventricles. Atrial repolarization does occur but is not seen as a separate, distinct wave because it’s masked by the big ventricular QRS complex. So the T wave specifically reflects the ventricles relaxing.

The T wave shows ventricular repolarization, which means the ventricles are resetting and relaxing after they’ve contracted to pump blood. It appears after the QRS complex, which is the event of ventricular contraction. The P wave represents atrial depolarization (atrial contraction), so it doesn’t describe the ventricles. Atrial repolarization does occur but is not seen as a separate, distinct wave because it’s masked by the big ventricular QRS complex. So the T wave specifically reflects the ventricles relaxing.

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