1)through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart. .
2)the right atrium
3)the tricuspid valve (TV) into the right ventricle (RV),
4)pulmonary valve (PV) into the main pulmonary artery
5)the blood flows through the right and left pulmonary arteries into the lungs
