He is inserted into a pulmonary vein, a type of belles carrying deoxygenated blood back to the heart.

The pulmonary vein carries Wille all the way up, where it enters the right atrium, through the inferior vena cava, tube that carries deoxygenated blood into the heart that is coming from the lower body.

Next, Wille goes through the tricuspid valve, a valve that lets blood through, but not back. Then the heart pumps the deoxygenated blood(from the right ventricle) through the pulmonary artery to the lungs.

Where does he go?