How Does the Heart Work and Why Is It More Powerful Than You Think?
The heart is a living system that continuously pumps blood, delivers oxygen, and adapts to your body’s changing needs. Through its four chambers, electrical signals, and network of blood vessels, it maintains circulation during exercise, stress, and rest. Coronary arteries supply the heart itself, while valves ensure one-way blood flow. Understanding how the heart works helps explain conditions like arrhythmias, blockages, and heart failure.