3 Questions
What is the normal duration range of the QRS wave in an ECG?
0.04 - 0.1 second
What does the P wave represent in an electrocardiogram (ECG)?
Contraction of the atrium
What does the T wave represent in an electrocardiogram (ECG)?
Relaxation of the ventricles
Study Notes
ECG Waves
- The normal duration range of the QRS wave in an ECG is 0.08-0.12 seconds.
- The P wave represents the atrial depolarization, which is the electrical activity that occurs when the atria (upper chambers) of the heart contract.
- The T wave represents the ventricular repolarization, which is the period when the ventricles (lower chambers) of the heart recover and prepare for the next heartbeat.
Test your knowledge of the cardiac conduction system with this quiz covering P wave, QRS wave, T wave, PR interval, and ST segment. See how well you understand the timings and functions of each wave and interval in the heart's electrical activity.
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