Lub Dub: Sounds Systole Diastole 'link'

The marks Diastole . The ventricles relax. But wait—the blood tries to flow backward. Luckily, the pulmonary and aortic valves snap closed to stop it. That snapping echo? That’s your 'Dub.'

The sounds associated with the heartbeat are clinically known as and S2 . These are not the sounds of the muscle contracting, but rather the sound of heart valves snapping shut to prevent the backflow of blood. lub dub sounds systole diastole

In the language of the chest wall, there are only two syllables. The marks Diastole

"Lub" is Low (bottom valves closing). "Dub" is Distant (top valves closing). lub dub sounds systole diastole