Definition of and Function

Pulmonary ArteriesPulmonary Arteries – The large blood vessels that carry blood from the heart to the lungs.

The main artery arises from the right ventricle and immediately branches into the right and left arteries.

The pulmonary arteries are the only arteries in the body that transport deoxygenated blood.

Like other arteries, however, the pulmonary arteries have sturdy, muscular walls that rhythmically contract in synchronization with the heartbeat.

The pulmonary valve regulates the flow of blood from the right ventricle into the pulmonary artery.

For further discussion of cardiovascular structure and function please see the overview section “The Cardiovascular System.”


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