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 main pulmonary artery is responsible for transporting oxygen-depleted blood away from the heart and back toward the lungs. The main artery splits into the left pulmonary artery and the right pulmonary artery, each of which directs the blood to the corresponding lung.Along with the umbilical arteries, these are the sole arteries in the body that transport oxygen-depleted blood. The umbilical arteries are located in the uterus.The pulmonary artery, or pulmonary trunk, originates from the bottom of the right ventricle of the heart.The artery is wide and short, measuring 1.2 inches wide and 2 inches long.he umbilical arteries are located in the uterus. The pulmonary artery, or pulmonary trunk, originates from the bottom of the right ventricle of the heart. The artery is wide and short, measuring 1.2 inches wide and 2 inches long.