What Causes The Lub Dub Sound Of Your Heartbeat !link! ✓ «OFFICIAL»
Think of it as a heavy, solid door slamming shut at the bottom of a staircase.
Here’s a secret your ears don’t usually catch. The two parts of the "dub" are not perfectly synchronized. The aortic valve (left side) closes a fraction of a second the pulmonary valve (right side). This is because the left side of the heart operates at much higher pressure. what causes the lub dub sound of your heartbeat
The silence represents , the period when the heart muscle relaxes and the chambers fill with blood. This is actually the most critical time for the heart muscle itself. The coronary arteries—the blood vessels that feed the heart muscle—receive their blood flow primarily during this relaxation phase. Think of it as a heavy, solid door
In a perfectly healthy, quiet room, you might actually hear a third sound, known as . This sound occurs right after the "dub." It sounds like a low-frequency thud (often described as lub-dub-ta ). In young athletes or pregnant women, this can be normal, caused by the sound of blood rushing quickly into a filling ventricle. However, in older adults, an S3 sound can indicate heart failure. The aortic valve (left side) closes a fraction
The human heart is a tireless engine. On average, it beats about 100,000 times a day, pumping blood through thousands of miles of blood vessels to keep the body alive. We often associate this work with the distinctive, rhythmic sound we hear through a stethoscope or feel when we place a hand over our chest: the familiar lub-dub .
It is caused by the simultaneous closure of the mitral and tricuspid valves (the atrioventricular valves).