Question

Explain in brief circulatoy system add a note
Cardiac cycle.​

Answer 1

Answer:

The cardiac cycle describes the performance of the human heart from the start of one heartbeat to the start of the next. It is divided into two parts: diastole, when the heart muscle relaxes and refills with blood, and systole, when the heart muscle contracts and pumps blood.

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Answer 2

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.