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. The right and left pulmonary arteries branch from the pulmonary trunk. They carry deoxygenated blood (from the right ventricle) into the lungs to exchange respiratory gases at the capillaries that surround the alveoli.ulmonary artery. The right and left pulmonary arteries branch from the pulmonary trunk. They carry deoxygenated blood (from the right ventricle) into the lungs to exchange respiratory gases at the capillaries that surround the alveoli.