The Rhythm of Life: Understanding the "Lub-Dub" Sound of Your Heart
But what exactly are you hearing when you press your ear to someone’s chest? Contrary to popular belief, you aren't hearing the heart muscle contracting. You are hearing the "slamming" of the heart's doors. The Anatomy of the Beat lub-dub sound of heart
The first sound, the , is officially known as S1 . It is typically lower-pitched and slightly longer than the second sound. The Rhythm of Life: Understanding the "Lub-Dub" Sound
Every second of every day, a rhythmic symphony plays inside your chest. It’s a sound so constant we often forget it’s there, yet it is the definitive sign of life. Doctors call it "heart sounds," but to the rest of us, it’s simply the . it’s simply the .