Cardiac Cycle Physiology Definition Phases Division Duration and Significance in Hindi amp English

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#CreatingForIndia ‪@MedikalGuruji‬ • #CardiacCycle • The cardiac cycle is a part of cardiovascular system. • The cardiovascular system is transport system it transport nutrition to tissue ,WBC to tissue, antibodies to tissue. • #Overview • #Definition • #PeriodsOfHeartBeat • #Duration and #Events of cardiac cycle • #Divisions of cardiac cycle • #Significance • #Pathophysiology • Definition • The cardiac cycle is the performance of the human heart from the beginning of one heart beat to the beginning of the next. • The cardiac cycle is the sequence or repetition of the coordinated events. • Periods of heart beat • • Each heart beat consists of two major periods systole and diastole during systole heart contract and blood is pumped out and during diastole heart relax and blood is filled in the heart. • • All these changes are repeated during every heart beat in a cyclic manner. • Duration and events of cardiac cycle • • The atrial events • • The ventricular events • Atrial events is also consists of two periods that are atrial systole (0.1 sec) and Atrial diastole(0.7 sec). • • In the same way ventricular events also consists of two periods that are ventricular systole (0.3 sec) and ventricular diastole(0.5 sec). • Division of cardiac cycle • The cardiac cycle consists of following phases • Atrial contraction. • atrial systole,systole,ventricular systole,atrial diastole,atrial systole in hindi,#atrial systole,atrium,atria,ventricular systole in hindi,systolic,ventricular systole in cardiac cycle,atrial pressure,#atrial diastole,atrial,diastole vs systole,systole and diastole,diastole and systole,cardiac cycle systole,#ventrical systole and ventrical diastole,diastole and systole of heart,atrial contraction,atrial pressure wave,atrial pressure curve • Isovolumetric contraction. • Rapid ejection phase. • Slow ventricular ejection phase. • Protodiastole. • Isovolumetric relaxation. • Rapid ventricular filling phase. • Slow filling phase • Atrial contraction (0.1 Sec.) • This is the first phase of cardiac cycle in which there is contraction of atria and 80% of ventricle filling is already done (i.e. passively). • Atrial contraction contributes only last 20% of ventricle filling/active filling. • Atrioventricular and mitral valves are open. • Aortic and pulmonary valves are closed. • A-wave is produced indicating increase in pressure in atria due to contraction. • Isovolumetric contraction (0.05 sec) • Isovolumetric contraction means the size and the shape of the heart muscle is same but the pressure increase in the ventricle and volume remain same. • Ventricle start to contract and pressure reached up to 80 mm of HG • ventricular systole,systole,ventricular diastole,atrial systole,ventricular systole in cardiac cycle,ventricular systole in hindi,ventricular systole vs diastole,ventricular volume,atrial diastole and ventricular systole,systolic heart failure,end systolic volume,ventricular,systole and diastole,ventricular volume loop,ventricular filling,ventricular volume curve,ventricular ejection,ventricular pressures,ventricular contraction • cardiac cycle,cardiac cycle phases,cardiac cycle physiology,cardiac cycle animation,cardiac cycle in hindi,cardiac cycle of heart,the cardiac cycle,cardiac cycle class 11,cardiac cycle steps,cardiac cycle in urdu,cardiac cycle dr najeeb,cardiac physiology,cardiac cycle neet,cardiac cycle systole,cardiac cycle physiology notes,cardiac cycle events,cardiac cycle 4 phases,cardiac cycle physiology mbbs,cardiac cycle khan academy,cardiac cycle ecg phases • cardiac cycle,cardiac cycle physiology,cardiac cycle animation,cardiac cycle phases,cardiac cycle in hindi,the cardiac cycle,cardiac cycle events,cardiac,cardiac cycle dr najeeb,cardiac cycle class 11,cardiac cycle of heart,cardiac cycle neet,cardiac cycle steps,cardiac cycle systole,events in a cardiac cycle,cardiac cycle physiology mbbs,cycle,cardiac cycle physiology notes,cardiac cycle mechanical events,a level cardiac cycle,cardiac cycle mbbs • Protodiastole (0.04 sec) • The first stage of relaxation. • Isovolumetric relaxation(0.06 sec) • S2/second heart sound is produced due to closure of aortic and pulmonary valve. • In this phase both atrioventricular and pulmonary valves are closed and ventricles start to relax which leads to fall in pressure of ventricles. • Rapid filling phase (0.11 sec) • Pressure becomes less than the pressure in atria. And mitral/Atrioventricular valves open. • Passive filling of ventricle occurs without atrial contraction up to 80% ventricle filled. • Aortic and pulmonary valves still closed. • Sometimes S3 is produced during exercise. • cardiac cycle,cardiac cycle physiology,cardiac cycle animation,cardiac cycle in hindi,cardiac cycle phases,the cardiac cycle,cardiac cycle of heart,cardiac cycle class 11,cardiac,cardiac cycle neet,cardiac cycle steps,cardiac cycle events,cardiac cycle lecture,cardiac cycle systole,cardiac cycle explanation,cardiac cycle physiology mbbs,cardiac cycle physiology @MedikalGuruji • #medical #guruji #medikal #clinical

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