The apex beat of the heart is synchronous wit | vedclass

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(A) The apex beat is the pulsation felt on the chest wall over the apex of the heart. It occurs during the early part of ventricular systole. The firs

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First heart sound

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(A) The apex beat is the pulsation felt on the chest wall over the apex of the heart. It occurs during the early part of ventricular systole. The first heart sound $(S_1)$,often described as 'lub',is produced by the closure of the atrioventricular $(AV)$ valves (mitral and tricuspid valves) at the onset of ventricular systole. Since the apex beat coincides with the beginning of ventricular contraction,it is synchronous with the first heart sound.

The apex beat of the heart is synchronous with:

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