What Is The Lub Dub Sound In Your Heart

The "lub dub" is the sound of your heart valves closing like doors. Here’s a short story to remember it:

These valves are located at the base of the large arteries leaving the heart. Once the blood has been ejected into the aorta and pulmonary artery, these valves snap shut to prevent that blood from leaking back into the relaxing ventricles. Why These Sounds Matter what is the lub dub sound in your heart