GENERAL ANATOMY
CARDIOVASCULAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Top chambers, then bottom chambers.
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Right Chambers, then the Left Chambers
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All four chambers beat in unison.
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Detailed explanation-1: -The atria relax while they fill with blood. Then they contract simultaneously and pump the blood to the ventricles on their respective sides. Then the ventricles contract and pump the blood to the different parts of the body.
Detailed explanation-2: -Answer and Explanation: The correct answer: The sequences of contraction of the heart chamber is c. both atria followed by both ventricles.
Detailed explanation-3: -The upper chambers-the right and left atria-receive incoming blood. The lower chambers-the right and left ventricles-pump blood out of your heart.
Detailed explanation-4: -The heart rate is regulated by a special cluster of cells in the right atrium, called the sinus node. The sinus node prompts the upper chambers to contract first.