MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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P wave
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QRS complex
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T wave
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none of the above
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Detailed explanation-1: -The ST segment, which is also known as the ST interval, is the time between the end of the QRS complex and the start of the T wave. It reflects the period of zero potential between ventricular depolarization and repolarization.
Detailed explanation-2: -The T wave on the electrocardiogram corresponds with ventricular repolarization (letter D). Other parts of the electrocardiogram also have the corresponding processes in the cardiac action potential. The P wave is due to atrial depolarization.
Detailed explanation-3: -The T wave represents ventricular repolarization. The T wave exhibits a positive deflection. The reason for this is that the last cells to depolarize in the ventricles are the first to repolarize.
Detailed explanation-4: -In most leads, the T wave is positive. This is due to the repolarization of the membrane. During ventricle contraction (QRS complex), the heart depolarizes.