MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2
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4
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.8
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.3
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Detailed explanation-1: -The normal duration of the cardiac cycle is 0.8 second. Atrial systole-0.1 sec. Atrial diastole-0.7 sec. Ventricular systole-0.3 sec.
Detailed explanation-2: -The cardiac cycle comprises a complete relaxation and contraction of both the atria and ventricles, and lasts approximately 0.8 seconds. Beginning with all chambers in diastole, blood flows passively from the veins into the atria and past the atrioventricular valves into the ventricles.
Detailed explanation-3: -Ventricular diastole: lasts about 0.5 seconds-begins before atrial systole, allowing the ventricles to fill passively with blood from the atria.
Detailed explanation-4: -It includes a complete contraction and relaxation of both the atria and ventricles. The duration of a cardiac cycle is 0.8 seconds.