Heartbeat Lub Dub Sound File

= Mitral & Tricuspid valves closing → blood pumping out. "Dub" = Aortic & Pulmonic valves closing → heart refilling.

Understanding the “Lub-Dub” – More Than Just a Sound heartbeat lub dub sound

❤️ What is that “Lub-Dub” sound? Let’s break it down. = Mitral & Tricuspid valves closing → blood pumping out

The heartbeat, also known as the cardiac cycle, is the sound produced by the heart as it pumps blood throughout the body. The characteristic "lub-dub" sound is a result of the heart's valves opening and closing in a specific sequence. also known as the cardiac cycle