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which of the following statements about cardiac cycle is right ? question 7 options: a) right atrium and right ventricle contract at the same time. b) left ventricle contracts after the contraction of right ventricle. c) left and right ventricles contract at the same time. d) left atrium and left ventricle contract at the same time.

Sagot :

The correct statement about the cardiac cycle is that the left and right ventricles contract at the same time.

The heart is a vital organ made of four chambers. The right and left sides of the heart are further separated into two chambers, located on either side of the cavity of the heart. The bottom chamber is known as a ventricle, and the upper chamber is known as an atrium (or auricle).

The ventricle is divided into left and right ventricles, and the auricle is divided into left and right auricles. The blood first flows into the auricle. At the beginning of the cardiac cycle, both the left and right auricles contract.

Then, the AV valves between the auricle and ventricle open, which allows blood into the ventricles. The left and right ventricles contract at the same time and open the semilunar valve to allow the blood to flow into the arteries.

Therefore, the correct option is option c).

To know more about the cardiac cycle:

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