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.
Noun. 1. pulmonary trunk-the artery that carries venous blood from the right ventricle of the heart and divides into the right and left pulmonary arteries. truncus pulmonalis.arteria pulmonalis, pulmonary artery-one of two arteries (branches of the pulmonary trunk) that carry venous blood from the heart to the lungs.oun. 1. pulmonary trunk-the artery that carries venous blood from the right ventricle of the heart and divides into the right and left pulmonary arteries. truncus pulmonalis.