HISTOLOGY
BLOOD VESSELS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
P wave
|
|
|
T wave
|
|
|
QRS complex
|
|
|
PQ segment
|
Detailed explanation-1: -T waves represent ventricular repolarization (atrial repolarization is obscured by the large QRS complex).
Detailed explanation-2: -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-3: -T wave is considered flat when the wave varies from-1.0 mm to + 1.0 mm in height. Hypokalemia or digitalis therapy can cause flattened T wave with a prominent U wave. As hypokalemia progressively worsens, T wave becomes more flatten while U wave becomes more prominent, with progressively deeper ST segment depression.
Detailed explanation-4: -The P wave in an ECG complex indicates atrial depolarization. The QRS is responsible for ventricular depolarization and the T wave is ventricular repolarization.