ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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During artrial systole, the ventricles are
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in systole
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in diastole
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contracting
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not filling
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Explanation:
Detailed explanation-1: -Atrial diastole: lasting about 0.7 seconds-relaxation of the atria, during which the atria fill with blood from the large veins (the vena cavae). Ventricular diastole: lasts about 0.5 seconds-begins before atrial systole, allowing the ventricles to fill passively with blood from the atria.
Detailed explanation-2: -Atrial Diastole: In this stage, chambers of the heart are calmed. That is when the aortic valve and pulmonary artery closes and atrioventricular valves open, thus causing chambers of the heart to relax. Atrial Systole: At this phase, blood cells flow from atrium to ventricle and at this period, atrium contracts.
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