what is cardiac cycle ?explain the sequential steps in the cardiac cycle with the help of a flow chart
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- cardiac cycle means time taken by heart to ending of one heart beat to starting of next heartbeat
- as we know heart is myogenic in nature and it works continously throw out the life heart get relax simultaniously for fraction of seconds
- our heart beats 72 to 75 /min times
- in our heart their are several valves which are play very important role in cardiac cycle . Genarally valve performs the function of preventing back flow of blood
- their are important 4 events in cardiac cycle that are
- atrial systole
- atrial diastole
- ventricular systole
- ventricular diastole
- Our heart has 4 chamber the right ventricle pump deoxygenated blood while left ventricle carry oxygenated blood
- The cardiac cycle initate during atrial systole becoz SA node is there which start the cardiac events
- atrial systole is for 0.1 sec in which tricuspid and bicuspid valves are open
- here are timings takes for complete the events
- atrial systole =0.1
- atrial diastole =0.7
- ventricular systole = 0.5
- ventricular diastole =0.3
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Cardiac Cycle is the cyclic event that occurs in the heart contraction and relaxation.
Explanation:
- Heart is the blood pumping organ of our body.
- It pumps blood all over the body by its strong muscles.
- The heart muscles are contracting and relaxing at regular intervals of time which leads to a rhythm of blood pushing through heart.
- The events of heart contraction includes
- A. Arterial systole,
- B. Ventricular diastole,
- C. Ventricular Systole and
- D. Arterial diastole.
- The arterial systole leads to pushing of blood to ventricle through auriculoventricular valves.
- The Ventricular systole leads to the pushing of blood from ventricles into aorta and pulmonary artery.
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