when does isovolumetric relaxation and ventricular filling take place
Cardiac cycle "Ventricular diastole," begins when the ventricles starts to relax. At this point, some blood of the previous cycle's systole is still flowing out of the ventricles through the semilunar valves, due to the inertia of the moving blood column, which overcomes the higher pressure in the aorta/pulmonary trunk with respect to the pressure in the ventricles. This short lasting phase, called "protodiastole" ends with the closure of the semilunar valves, producing the second heart sound (S2). Now that both the AV valves and the semilunar valves are closed, the ventricles are now closed chambers. Hence, this phase is known as isovolumetric (also called isovolumic, isometric) relaxation phase. Then the atrioventricular (AV) valves (the mitral valve and the tricuspid valve) open, allowing blood to fill the ventricles. This ventricular inflow phase can be sub-divided into the 'first rapid filling phase' as blood rushes in from the atria as a result of ventricular dilation; a phase of slow ventricular filling called 'Diastasis', and the 'last rapid filling phase' due to atrial contraction (systole).
Interventricular septum The interventricular septum, is the stout wall separating the ventricles, the lower chambers of the heart from one another.
Coronary artery disease Chest pain that occurs regularly with activity, after eating, or at other predictable times is termed stable angina and is associated with narrowings of the arteries of the heart.
Greg Rikaart Gregory Andrew "Greg" Rikaart (born February 26, 1977)[1] is an American actor.