Next time you listen to a chest, remember: The "Lub" is the sound of your heart securing the exit routes before sending blood to the body! 🩸
The S1 heart sound, often called the sound, is the first normal heart sound heard during a heartbeat . It marks the beginning of systole , which is the phase where the heart's ventricles contract to pump blood out to the body and lungs. What Causes S1? what is the s1 heart sound
S1 is produced by the of heart tissue and blood when two key valves snap shut at the beginning of ventricular contraction (systole): Next time you listen to a chest, remember:
