What Produces The Lub Dub Heart Sounds Online

The Lub-Dub is a brilliant evolutionary solution. It is the audible signature of one-way flow—the sound of chaos being prevented. Every snap, every thud, and every silent pause is a testament to the fact that your heart is not just a pump; it is a finely tuned, hydraulic percussion instrument.

In fact, your heart is mostly silent during the actual pump. what produces the lub dub heart sounds

The "Dub" is the sound of the escape hatches closing after the blood has left. Part 4: The Bizarre Physics of the Silent Gap Notice the rhythm: Lub...Dub...pause...Lub...Dub...pause. The Lub-Dub is a brilliant evolutionary solution

As the ventricles finish squeezing, the pressure inside them drops rapidly. The blood that was just blasted into the arteries (the lungs and body) suddenly wants to rush backward into the heart. It’s like a wave hitting a seawall. In fact, your heart is mostly silent during the actual pump

To stop this backflow, the (pulmonary and aortic) snap shut. Unlike the fleshy AV valves, these look like three tiny crescent moons (hence "semilunar") shaped like a Mercedes-Benz logo.