What Is Lub Dub Sound Verified

Key point: During breathing, the pulmonic valve closes slightly later than the aortic valve. This creates a normal, slight split in the "dub" sound (called ).

The lub-dub sound is a masterpiece of biomechanical engineering. Two pairs of valves, closing at precisely the right moment, create a rhythm that sustains your entire body. what is lub dub sound

| Sound | Technical Name | What is Closing? | What is Happening? | | :--- | :--- | :--- | :--- | | | S1 | Mitral & Tricuspid Valves | Ventricles contract (pushing blood out). | | Dub | S2 | Aortic & Pulmonary Valves | Ventricles relax (chambers fill up). | Key point: During breathing, the pulmonic valve closes

The pause between the "dub" and the next "lub" is typically longer than the pause between the "lub" and the "dub." This represents the time the heart takes to fill with blood. What if it sounds different? Two pairs of valves, closing at precisely the

A murmur is a valve closing. It is the sound of turbulent blood flow .