pulmonary trunk

The semi-lunar pulmonary valve is located between the right ventricle and the pulmonary trunk.

The role of the right ventricle is to pump deoxygenated blood to the lungs through the pulmonary trunk and pulmonary arteries.

Instead of coming from the pulmonary trunk, supply develops from the aorta and other systemic arteries.

This will end dividing the aorta from the pulmonary trunk.

These are located at the base of both the pulmonary trunk (pulmonary artery) and the aorta, the two arteries taking blood out of the ventricles.

It runs in a common pericardial sheath with the pulmonary trunk.

These two blood vessels twist around each other, so that the aorta starts out posterior to the pulmonary trunk, but then twists to its right and anterior side.

Between it and the pulmonary trunk is a network of autonomic nerve fibers, the cardiac or aortic plexus.

The truncus arteriosus gives rise to the ascending aorta and the pulmonary trunk.

In this condition, the embryological structure known as the truncus arteriosus fails to properly divide into the pulmonary trunk and aorta.