Question

explain cardiac cycle in sequential steps

Answer 1

cardiac cycle (0.8 sec)


ATRIAL SYSTOLE (0.1 sec)
contraction) 
 - valves open,blood starts to flow                                                                          in respective ventricles after
entry of blood in respective ventricles
 valves closed                             
                          I
                          I
                         V                              

 VENTRICLE SYSTOLE (0.3 sec)                     
- deoxygenated blood from right ventricle 
 enters in pulmonary trunk
- oxygenated blood from left ventricle
enters in systamic aorta
- back flows pretended by semi-
lunar valves.
              
                  I
                  I
                 V

JOINT DIASTOLE (relaxation)
(0.4 sec)
-both atria and ventricle relaxed 
-right atrium receives blood from pulmonary 
veins
                                   
                   again it repeats cause it's a cycle 

#hope it helps!!