What Makes The Lub Sound In The Heart 2021 «EASY ★»

It marks the beginning of systole , which is the contraction phase of the cardiac cycle. 2. The "Dub" Sound (S2)

If you’ve ever listened to a heartbeat through a stethoscope, you’ve heard the classic rhythm: . While both sounds are fascinating, this guide focuses on the first one: the “Lub.” what makes the lub sound in the heart

In conclusion, the "lub" sound that defines the heartbeat is a sonic marker of safety and direction. It is the sound of the atrioventricular valves locking down to protect the lungs from pressure, ensuring that blood moves forward. Together with the "dub" of the exit valves closing, this two-part rhythm represents the intricate choreography of life. It is a reminder that within our chests, a complex system of valves and chambers is working in perfect harmony, ensuring that the river of life flows ever onward. It marks the beginning of systole , which

It’s the valves hitting each other like cymbals. Instead: While both sounds are fascinating, this guide focuses

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The is caused by the turbulent closing of the atrioventricular (AV) valves —specifically the tricuspid valve (on the right side of the heart) and the mitral valve (on the left side of the heart)—at the beginning of ventricular contraction (systole).

This marks the end of systole and the start of diastole , the phase where the heart relaxes and refills with blood. Summary of Heart Sounds How the Heart Works - How the Heart Beats | NHLBI, NIH