Question

please can anyone tell explanation of 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. It starts at the beginning of one heartbeat and ends at the beginning of another.

Explanation:

Answer 2

Heya mate! you are having an amazing question... here is the 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. It starts at the beginning of one heartbeat and ends at the beginning of another.

Ventricular systole: Isovolumetric contraction – atrioventricular and semilunar valves are closed  Semilunar valve opens  Emptying of the ventricle  End-systolic volume

Atrial systole: Action potential from the sinoatrial node (SAN)  Synchronous atrial contraction  Active filling of ventricles

Atrial diastole: Atria passively filling  Atrioventricular valves open

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