High School

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In which direction does the depolarization wave travel across the ventricles?

A. From base to apex
B. From apex to base
C. From left to right
D. From right to left

Answer :

Final answer:

The depolarization wave across the ventricles travels from the apex to the base, is part of ventricular depolarization, and is represented by the QRS complex in an ECG. Therefore, the correct answer is option b) From apex to base.

Explanation:

The depolarization wave travels across the ventricles from the apex to the base. This is an important aspect of ventricular depolarization, which is one of the phases of the cardiac cycle. During ventricular depolarization, the outer surface of the heart changes from positive to negative as the wave of depolarization spreads. In an electrocardiogram (ECG), this process is represented by the QRS complex, and it is essential for the coordinated contraction of the ventricles that helps in pumping blood out of the heart to the body and lungs.

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