What Is | Lub Dub Sound Repack

But what exactly causes these two distinct sounds? Why doesn't the heart make just one sound? And what happens when "lub-dub" turns into something else, like a "whoosh" or a "click"?

The order is based on the in the heart cycle. Systole (contraction) always comes before diastole (relaxation). The AV valves (lub) must close at the start of contraction. The semilunar valves (dub) close at the end of contraction. what is lub dub sound

A murmur is a valve closing. It is the sound of turbulent blood flow . But what exactly causes these two distinct sounds