The number of stages involved in heart beat is:
Correct answer: B. 3
- A. 2
- B. 3
- C. 4
- D. 5
Explanation
Every single heartbeat includes three major stages: atrial systole, ventricular systole, and complete cardiac diastole.
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About Circulation
The circulatory system covers the chambers, valves and conducting pathway of the human heart, along with the cardiac cycle and control of heartbeat. It compares arteries, veins and capillaries by structure and function, and explains how the lymphatic system returns tissue fluid, transports absorbed fats and supports immunity.
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