In a standard electrocardiogram (ECG), which of the following specific points marks the end of ventricular systole?

Step-by-step solution

According to NCERT, the T-wave represents the return of the ventricles from an excited to a normal state (repolarisation). The exact point that marks the end of ventricular systole is the end of the T-wave. The Q wave marks the beginning of ventricular systole, while the beginning or peak of the T-wave represents intermediate stages of repolarisation rather than the mechanical end of the contraction. Answer: End of the T-wave