Receives deoxygenated blood from the body and pumps it to the lungs.
Receives oxygen-rich blood from the lungs and pumps it out to the rest of the body. Heart.rar
Your heart functions as a dual-pump system that never stops, beating approximately : Receives deoxygenated blood from the body and pumps
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 Rate: The Vital Metric All About
The heart is a fist-sized muscular organ located in the center of your chest, slightly behind and to the left of the breastbone. It is divided into four main chambers:
The right and left ventricles pump blood out of the heart.
Four valves (tricuspid, pulmonary, mitral, and aortic) act as one-way gates to keep blood flowing in the correct direction. ⚙️ How the "System" Works