The heart is a remarkable four-chambered muscular pump that drives blood circulation throughout your body. This animated cross-section reveals the internal anatomy, showing how the atria receive blood while the ventricles pump it out, creating the continuous flow that sustains life.
🏗️ Heart Anatomy
Four chambers: right & left atria, right & left ventricles
Atrioventricular valves (tricuspid & bicuspid)
Semilunar valves (pulmonary & aortic)
Muscular walls: myocardium contracts rhythmically
Electrical conduction system controls heartbeat
Incredible Heart Facts!
Your heart beats about 100,000 times per day, pumping 2,000 gallons of blood through 60,000 miles of blood vessels!
🎯 Learning Objectives
Understand heart anatomy, the cardiac cycle, valve function, and how this muscular pump maintains continuous blood circulation.