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).
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. what is the lub dub sound
The "lub-dub" is the sound of a perfectly timed security system. The "lub" closes the entrance to the pumping chambers, and the "dub" closes the exit. Together, they ensure that your blood only moves in one direction: forward. S2 occurs at the , marking the end of systole
If you’ve ever wondered exactly what is happening inside your chest to create those sounds, The Mechanics of the Sound The "lub-dub" is the sound of a perfectly
The heartbeat is a cycle with two distinct phases. Each phase creates a specific sound.