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Which among the following is correct dur...

Which among the following is correct during each cardiac cycle ?

A

The volume of blood pumped out by the Rt (Right) and Lt (Left) ventricles is same

B

The volume of blood pumped out by the Rt and Lt ventricles is different

C

The volume of blood received by each atrium is different

D

The volume of blood received by the aorta and pulmonary artery is different

Text Solution

Verified by Experts

The correct Answer is:
A
During a cardiac cycle, each ventricle pumps out approximately 70 mL of blood, thus both the ventricles pump out same volume of blood in eacg cardiac cycle.
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Knowledge Check

  • Which of the following statements is correct for cardiac cycle?

    A
    The ventricular systole is stimulated by the SA node.
    B
    The first heart sound coincides with the closure of semilunar valves and relaxation of ventricles.
    C
    The first heart sound coincides with opening of AV valves
    D
    The fall in ventricular pressure causes the closure of semilunar valve to prevent the back-flow of blood into ventricles.

  • The duration of cardiac cycle is

    A
    `0.8 "sec"`
    B
    `0.8 mu "sec"`
    C
    `0.08 "sec"`
    D
    `0.008 "sec"`

  • Which of the following statements about the cardiac cycle is CORRECT?

    A
    At no time during the cardiac cycle are the mitral and aortic valves both open.
    B
    The pressure in the left atrium exceeds that of the left ventricle throughout the ventricular ejection period.
    C
    Most filling of the ventricle in diastole in a resting individual occurs with atrial contraction.
    D
    The second heart sound is most closely associated with the closure of the left atrioventricular (mitral) valve.

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    Docters use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when :

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