First heart sound occurs during the period of________________?

Related Mcqs:

All the heart valves are open during which stage of cardiac cycle __________________?

A. Systolic ejection B. Isovolumetric relaxation C. Isovolumetric contraction D. None of the above...

The following factors increase the cardiac output except______________?

A. Preload B. After load C. Heart rate D. Myocardial contractility...

Cardiac output is a measure of______________?

A. Peripheral resistance X tissue fluid B. Peripheral resistance X cardiac rate C. Blood pressure X cardiac rate D. Heart rate X blood volume...

Consider the following statements________________?

A. Starling’s law of heart states that increase in force of contraction is directly related to cardiac ouput B. Staling’s law of heart states that the force of ventricular contraction is directly related to the end diastolic volume C. Both A and B D. None of the above...

Isovolumetric relaxation ends immediately after________________?

A. AV Valve closes B. When ventricular pressure falls below aortic pressure C. When ventricular pressure falls below atrial pressure D. None of the above...