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.
The pulmonary arteries. The pulmonary arteries are the major vessels that carry blood from the heart to the lungs. The right branch of the main pulmonary artery takes blood to the right lung, the left branch to the left lung.