What Is Lub Dub Sound In Heart _best_ Site

This was the sound of the great Atrioventricular Valves closing. Imagine a heavy, leathery door slamming shut after a crowd has passed. That deep, slightly soft, and resonant "lub" was the Tricuspid and Mitral valves snapping together. They had just finished letting blood flow from the upper chambers (atria) down into the powerful lower chambers (ventricles). Now, as the ventricles began to squeeze, those valves had to close instantly— thwack! —to prevent the blood from sloshing backward. That thwack, echoing through the chest wall, was the .

That silence was the heart’s rest—the brief moment when the chambers refilled with blood, waiting for the next order to beat. what is lub dub sound in heart

The Mitral Valve chuckled, its two leaflets trembling. "Hurt? No, little one. That 'lub-dub' is our promise. The lub is us—the entry gates—closing to make sure you go down into the ventricle, not back up. The dub is the exit gates closing to make sure you go out to the body, not back in. The silence between us? That's the moment the heart refills with love—and blood—for the next beat." This was the sound of the great Atrioventricular