The S3 heart sound occurs as the mitral valve opens and allows blood to fill the left ventricle passively. The sound happens as a result of blood striking the left ventricle during early diastole. An ...

S1 is the first heart sound that doctors can hear using a stethoscope. The vibrations that occur when the mitral and tricuspid valves in the heart close produce the S1 sound. There are two common ...

Scientists have recently made a groundbreaking discovery by capturing the sounds of Earth’s “heartbeat” from space. This enigmatic phenomenon has intrigued researchers, prompting deeper investigations ...

The recording starts with a gentle, almost whisper‑like thump that mimics the atrial contraction—an airy “thud” carried through thin layers of synthetic tissue that gives the listener the feeling of ...

Whether you're studying for the boards or just want to stay sharp, Learn the Heart has the tools you need to challenge your cardiology IQ.