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 artery: One of the two vessels which are formed as terminal branches of the pulmonary trunk and convey un-aerated blood to the lungs. The two pulmonary arteries differ in length and anatomy.