Describe the path of a red blood cell through the heart

Red blood cell arrives from the inferior vena cava into right atrium before it passes through the tricuspid valve into right ventricle. It then passes through the pulmonary valve into pulmonary artery before travelling through the lungs and back into the heart, this time the left atrium via the pulmonary vein.

Nearing the end of its journey now, it passes through the mitral valve into the left ventricle. Finally, it passes into the aorta from the left ventricle via the aortic valve.