The human heart has 4 chambers, 2 atria and 2 ventricles. Deoxygenated blood from the head, neck, and arms go through the superior vena cava and into the right atrium. Blood from the trunk and legs...
They are the 2 chambers on the top, the atria. The right atrium takes venous blood from the body, and the left atrium collects blood coming from the lungs where it has been oxygenated. The serious...