cardiac cycle overview

How Blood Circulates in the Heart | Cardiac Cycle Explained in 3D Animation

The Cardiac Cycle Explained | Every Phase of Your Heartbeat

LUCAS 3: The Future of CPR and Life-Saving Technology

Heart Valves in Motion | The Real Origin of S1 & S2 💓

Each heartbeat is made up of two main sounds known as S1 and S2. In this video, you'll see exactly how the S1 sound corresponds to the closing of the mitral and tricuspid valves at the start of ventricular contraction, and how the S2 sound is produced when the aortic and pulmonary valves close as the ventricles relax. This high-precision animation is created by Dr. Bahaa to help medical students understand the exact timing and coordination of heart sounds with valve motion. It's also made easy f

Hands-Only CPR: How to Save a Life When Someone Collapses

Flatline Explained: What It Means and How to Respond