Understanding the Four Chambers of the Human Heart

The human heart has four chambers:

1. Two atria or upper chambers: The right atrium collects deoxygenated blood from the body, while the left atrium receives oxygenated blood from the lungs.

2. Two ventricles or lower chambers: The right ventricle pumps deoxygenated blood into the lungs, while the left ventricle pumps oxygenated blood to the body.

These chambers are separated by valves, which ensure that blood flows in one direction and prevent it from flowing backwards.