Pathway of Blood

Right atrium →Tricuspid Valve → Right Ventricle → Pulmonary Semilunar Valve → Pulmonary Arteries → Lungs → Pulmonary Veins → Left Atrium → Bicuspid Valve → Left Ventricle → Aortic Semilunar Valve → Aorta → Arteries → Arterioles → Capillaries → Venules → Veins → Vena Cavae → Right Atrium

The right side of your heart sends deoxygenated blood to the lungs, while the left side of your heart sends oxygenated blood to the rest of your body.