Close your eyes. Place your hand over your heart. What do you feel?
This is the first heart sound. It occurs at the start of ventricular contraction (systole) when the mitral and tricuspid valves snap shut to prevent blood from flowing backward into the atria. lub lub dub heart sound
Key Points * The heart tone “lub,” or S1, is caused by the closure of the mitral and tricuspid atrioventricular (AV) valves at the... Medicine LibreTexts Heart sounds - Wikipedia In healthy adults, there are two normal heart sounds, often described as a lub and a dub that occur in sequence with each heartbea... Wikipedia Heart sounds - Wikipedia In addition to these normal sounds, a variety of other sounds may be present including heart murmurs, adventitious sounds, and gal... Wikipedia Heart sounds - Wikipedia "ta-lub-dub" or "a-stiff-wall" It is a sign of a pathologic state, usually a failing or hypertrophic left ventricle, as in systemi... Wikipedia What Causes the Heart Sounds Heard with a Stethoscope? Feb 26, 2026 — Close your eyes
When a third sound is heard, specifically a , the rhythm sounds like "lub-dub-ta" or "lub-lub-dub," often compared to the cadence of the word "Kentucky" . S3 Heart Sound - MEDZCOOL S3 Heart Sound - MEDZCOOL YouTube·Medzcool This is the first heart sound
Here’s a creative and informative piece based on — a playful twist on the classic heartbeat sound.