MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is a consequence if the QRS complex?
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Opening of the AV valves
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Ventricular myocardial contraction
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Closure of the semilunar valves
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Ventricular myocardial relaxation
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Explanation:
Detailed explanation-1: -The three waves of the QRS complex represent ventricular depolarization. For the inexperienced, one of the most confusing aspects of ECG reading is the labeling of these waves.
Detailed explanation-2: -The QRS complex is a record of the movement of electrical impulses through the lower heart chambers (ventricles). The ST segment shows when the ventricle is contracting but no electricity is flowing through it. The ST segment usually appears as a straight, level line between the QRS complex and the T wave.
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