The first heart sound, the "lub," is technically known as . It is typically a lower-pitched, slightly longer sound that marks the beginning of systole , the phase when the heart's lower chambers (ventricles) contract. How the Heart Works - How the Heart Beats | NHLBI, NIH
The "lub-dub" sound is the normal sound of a healthy heartbeat, caused by the . heart lub dub sound
The "lub-dub" sound is an essential part of our bodily rhythms, and it's a reminder of the incredible work our hearts do every day! The first heart sound, the "lub," is technically known as
Interestingly, you can hear the "lub-dub" sound in different ways, depending on your listening method: The "lub-dub" sound is an essential part of
As she continued to beat, Heartie began to wonder: what was causing this lub-dub sound? She asked her best friend, a clever little blood cell named Bloody, who was always zooming through her chambers.