What Makes — The Lub Dub Sound

The next time you feel your pulse, remember the intricate mechanics at play. The "lub-dub" isn't just a heartbeat; it is a symphony of hydraulics. It is the sound of four vital doors opening and closing in perfect synchronization, ensuring that every cell in your body receives the oxygen it needs to survive.

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The "lub-dub" is the sound of these valves closing. The next time you feel your pulse, remember