Cardiac Cycle Flashcards
Isovolumetric ventricular contraction:
Aortic Valve
Closed
Isovolumetric ventricular contraction:
Mitral valve
Closed
Isovolumetric ventricular contraction:
LV pressure
Increases
Isovolumetric ventricular contraction:
LV volume
Constant
What cardiac event causes the S1 heart sound?
Mitral valve closure
What cardiac event marks the beginning of isovolumetric contraction?
Mitral valve closure
Ventricular ejection:
Aortic valve
Open
Ventricular ejection:
Mitral valve
Closed
Ventricular ejection:
Ventricular volume
Decreasing (Stroke volume)
Isovolumetric relaxation:
Aortic valve
Closed
Isovolumetric relaxation:
Mitral valve
Closed
What cardiac event is responsible for the S2 heart sound?
Aortic valve closing
Isovolumetric relaxation:
LV pressure
Decreases
Isovolumetric relaxation:
LV volume
Constant
What does the dicrotic notch seen on the arterial pressure waveform signify?
Closure of the aortic valve causes some retrograde flow from the aorta towards the aortic valve