Question

what is cardiac cycle ?...... .​

Answer 1

Answer:

The cardiac cycle is defined as a sequence of alternating contraction and relaxation of the atria and ventricles in order to pump blood throughout the body. ... Both the atria and the ventricles undergo alternating states of systole and diastole.

Explanation:

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Answer 2

Answer:

The cardiac cycle is the performance of the human heart from the ending of one heartbeat to the beginning of the next. It consists of two periods: one during which the heart muscle relaxes and refills with blood, called diastole, following a period of robust contraction and pumping of blood, dubbed systole.