If you hear an abnormal sound in between the two normal heart sounds, during which phase of the cardiac cycle is the abnormal sound occurring? A. Ventricular diastole B. Ventricular systole C. Atrial systole

Abnormal heart sounds typically occur either during ventricular diastole or systole and can be caused by various conditions such as valve abnormalities or heart murmurs. Diastole is the phase where the heart relaxes and fills with blood, while systole is when the heart contracts and pumps blood out. The timing of the abnormal sound in relation to the normal "lub-dub" sounds can help you pinpoint the issue. A fun fact about heart sounds is that the first heart sound (S1) corresponds to the closure of the mitral and tricuspid valves at the start of ventricular systole, while the second heart sound (S2) marks the closure of the aortic and pulmonary valves at the end of systole. Listening to these sounds can provide crucial insights into cardiac health!