What Makes The Lub Sound In The Heart [Edge]

🩺 The “Lub” is also called the first heart sound (S1) .

The rhythmic beat of the human heart is the most fundamental sound of life. From the moment it forms in the womb until the final beat of a lifetime, this organ pumps tirelessly, creating a distinctive two-part sound often described as "lub-dub." While we often take this rhythm for granted, it is not merely the sound of a muscle flexing; it is the acoustic signature of complex plumbing. The sounds are not caused by the heart muscle itself, but rather by the precise and forceful closing of four critical valves that ensure blood flows in only one direction. what makes the lub sound in the heart

The sound in your heartbeat is caused by the closing of the atrioventricular (AV) valves . Specifically, this is what is happening when you hear it: 1. The "Lub" Sound (S1) 🩺 The “Lub” is also called the first heart sound (S1)

Imagine a water balloon (ventricle) being squeezed: The sounds are not caused by the heart

These valves close after blood has been ejected from the ventricles to prevent it from leaking back into the heart from the major arteries.