Think: "M1T1" The Mitral valve usually closes just a split second before the Tricuspid valve. Think: "M1T1" The Mitral valve usually closes just

Next time you listen to a chest, remember: The "Lub" is the sound of your heart securing the exit routes before sending blood to the body! 🩸 what is the s1 heart sound

While often heard as a single "lub," S1 actually consists of two distinct mechanical components:

If you’ve ever listened to a heartbeat through a stethoscope, the familiar “lub-dub” rhythm is the sound of heart valves closing. The first part of that rhythm—the —is known clinically as the S1 heart sound .

The sound is primarily generated by the sudden closure of the :