Heart.rar
The right and left atria receive incoming blood.
Your heart functions as a dual-pump system that never stops, beating approximately : Heart.rar
The right and left ventricles pump blood out of the heart. The right and left atria receive incoming blood
A natural "pacemaker" called the sinoatrial (SA) node sends electrical impulses that tell the heart muscles when to contract. 📊 Heart Rate: The Vital Metric All About Heart Rate | American Heart Association Heart.rar
