What Causes The Lub Dub Sound Of The Heartbeat Page

She drew a quick sketch on the exam paper: four rooms, four doors. “The lub is the first sound. It happens when your heart squeezes to push blood out. Those two big doors at the top—the mitral and tricuspid valves— snap shut. Hard. Like slamming two car doors at once.”

“Perfect,” she said. “Your doors are doing their job.” what causes the lub dub sound of the heartbeat

This precise "lub-dub" sequence ensures that oxygen-rich blood moves forward efficiently, powering every cell in the body with the rhythm of life. She drew a quick sketch on the exam

If the two sides of the heart aren't perfectly in sync, you might hear a "stutter" in the "dub" sound. what causes the lub dub sound of the heartbeat

The "lub-dub" represents the two main phases of the cardiac cycle: