NPB 113 Lecture Notes - Lecture 6: Wiggers Diagram, Blood Pressure, Diastole
3 Apr 2021
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Blood swelled t pressure ventricular ejection. Diastole ( ventricular diastole) : ventricle relaxing. Cardiac cycle - 0. 8101 sec i n 0. 3 sec systole 10. 33 systole. O - o. o. l l l l l l l lsovolumethlc i sm stole contraction 121 l l" Diastole too l l l l y l l l lsovolumemc"s-w l relaxation l l (venous pressure ) cathal contraction ) l l active. F-- my: av valve closes due to ventricular contraction. T ventricular pressure to exceed atrial pressure and close av valve. Ventricles contracting but valves closed , no blood entering or leaving. Ventricular pressure tt: semilunar valve opens. Ventricular ejection of volume of blood ( pv > pao na ) s . Blood flow continues driven by kinetic energy of the blood: semilunar valve closes. Aortic pressure becomes strong enough to stop ventricular ejection: iso volumetric relaxation ventricles relaxing but valves closed , no blood entering or ejecting ventricular pressure did, av valve opens.
