Which of the following are associated with ventricular systole?
A. Lub sound
B. Dub sound
C. P wave
D. S wave
E. Ventricular filling
F. Ventricular ejection

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B, C, and E

B, D, and F

A, C, and F

A, D, and F

answer is B.

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Detailed Solution

During ventricular systole, ‘lub’ sound is produced due to the closure of atrioventricular valves. QRS complex represents ventricular depolarisation. Ventricular systole begins shortly after the Q wave. R wave and S wave coincide with ventricular systole. The contraction of the ventricles pumps blood into the aorta and pulmonary trunk (ventricular ejection).

‘Dub sound’ is produced during joint diastole.

The p wave represents atrial depolarisation. It is produced at the end of joint diastole.

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