Answer:
The answer is Vein
Explanation:
Pulmonary circulation is the part of the circulatory system that carries deoxygenated blood from the heart to the lungs, and then returns oxygenated back to the heart. A vein is a blood vessel that conducts blood from the capillaries to the heart and is characterized by containing deoxygenated blood because they carry carbon dioxide and metabolic wastes from the tissues, in the direction of the organs responsible for their removal.
