Periods During Cardiac Cycle
Phrase
Period
Ventricles
Semilunar
Valves
Cuspid Valves
Systole
Isovolumetric
Ventricular
Contraction
Unchanged
Closed
Closed
Ventricular
Ejection
Shrink
Closed
Open
Isovolumetric
Ventricular
Relaxation
Unchanged
Closed
Closed
Ventricular
Filling
Inflated
Open
Closed
Diastole
Heart Sounds
Situation
Sound
Closure of Semilunar Valves
Lub
Closure of Cuspid Valves
Dub
Narrowed Valves
Murmur
Leaky Valves
Murmur