The "lub-dub" sound of a heartbeat is the sound of the heart's valves snapping shut to ensure blood flows in one direction. It is not the sound of the heart muscle contracting, but rather the vibration caused by the closure of these valves. The Two Core Sounds
It is so familiar that we often ignore it, yet this rhythmic double beat is one of the most complex and vital sounds in nature. But what actually creates that noise? It isn't the blood flowing, nor the heart "beating" like a drum. It is the sound of heartbeat sound lub dub
Shorter, higher, softer, at the start of diastole (relaxation). Clinical Significance The "lub-dub" sound of a heartbeat is the
By taking care of your heart, you can help ensure a normal and healthy heartbeat sound! But what actually creates that noise