ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What does a normal cardiac cycle consist of?
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2 atria contracting while 2 ventricles relax, then vice versa.
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1 atria contract while the other relaxes
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2 ventricle and 1 atria contract, while the other atria relaxes
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None of the above
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Explanation:
Detailed explanation-1: -Both the atria and the ventricles undergo alternating states of systole and diastole. In other words, when the atria are in diastole, the ventricles are in systole and vice versa.
Detailed explanation-2: -During a normal, healthy heartbeat, or what we call a cardiac cycle, the top two chambers of the heart, called the atria, contract simultaneously. Then, as they relax, the bottom two chambers, called the ventricles, contract.
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