Your heart’s two lower chambers (ventricles) have just filled with blood and are starting to contract to pump that blood out to the body and lungs.
S2 occurs at the , marking the end of systole. It results from the sudden closure of the semilunar valves – the aortic valve (left side) and pulmonary valve (right side). what is the lub dub sound
Every time you feel your pulse or press your ear to someone’s chest, you hear a rhythmic, two-part melody: lub-dub, lub-dub . While it sounds like a simple beat, these noises are actually the acoustic signatures of your heart working to keep you alive. Your heart’s two lower chambers (ventricles) have just