Question

what is cardiac cycle ? how does it occur​

Answer 1

Answer:

The cardiac cycle is the performance of the human heart from the beginning 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.

Answer 2

Answer:

,

Explanation:

hope it's help full to you