Although there are many ingredients used to make glue, most formulas contain something called polymers. A polymer is a large molecule that often is described as being a long molecular strand, much like spaghetti.
The pulmonary artery carries deoxygenated blood from the heart to the lungs. It is one of the only arteries (other than the umbilical arteries in the fetus) that carries deoxygenated blood.
Pulmonary circulation is the system of blood vessels and associated tissues forming the part of the cardiovascular system that carries oxygen-poor (deoxygenated) blood., to the lungs, and returns oxygen-rich (oxygenated) blood from the lungs. .more accurately 'oxygen-poor' blood). 1  Deoxygenated blood leaves the right ventricle (RV) of the heart via the pulmonary artery. 2  The pulmonary artery divides into two main branches, the right pulmonary artery and the left pulmonary artery, which carry deoxygenated blood to the right and left lungs respectively.