Question

Define cardiac cycle and mention the stages in cardiac cycle

Answer 1

Hey there !

The two main phases of the cardiac cycle are systole and diastole, and follow each other in sequence. Typically, the cardiac cycle starts with diastole, or the relaxation of all the heart muscles. During diastole, blood returns to the heart, and begins to fill the atria and ventricles.

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Answer 2

hii ✌️

here is your answer...

CARDIAC CYCLE
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Cardiac cycle starting with the right side of the heart...

•In reality of course the two sides of the heart work together at the same time but it is easier to understand if we look at them separately because each side of the heart is a different function...O:-)O:-)O:-)O:-)O:-)O:-)

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•The cardiac cycle beings as deoxygenated blood flows from the body into the right atrium via the superior vena cava and inferior vena

•In the next phase right atrium contracts pumping blood into the right ven tricle through the tricuspid valve..,.¥€¥€¥€

•once the right ventricles fills with blood the tricuspid valve closes to prevent blood flowing back into the atrium. The right ventricles contracts forcing the pulmonary valve to open as blood is pumped into the pulmonary artery.

•Blood then travels to the lungs and the pulmonary valve closes at the same time the right atrium relaxes ready to accept the next intake of blood.In the lungs the blood picks up Oxygen and releasses carbon dioxide.

• oxygenated blood flows from lungs into the left atrium via the pulmonary veins.

•The left atrium contracts to pump blood into the left ventricle through the mitral valve.

•once the left ventricle has filled with blood the mitral valve closes.

•Next the left ventricle contracts forcing the aortic valve to open allowing blood to pumped into the aorta and from there around the body.

•The aortic valve closes to prevent blood flowing back into the left ventricle and the left ventricle relaxes ready to accept the next intake of blood.

BNOW CARDIAC CYCLE IS COMPLETE


THE END

BY SILU12@......

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