What is the major artery leading from the right ventricle of the heart to the lungs?

The major artery leading from the right ventricle of the heart to the lungs is the pulmonary artery. This artery is responsible for carrying deoxygenated blood from the right ventricle to the lungs, where the blood undergoes oxygenation. The pulmonary artery splits into left and right branches to supply each lung, allowing for gas exchange to occur in the alveoli.

Understanding the function of the pulmonary artery is essential for EMTs, as it plays a crucial role in the circulatory system's pathway for oxygenating blood. The other arteries listed serve different purposes: the aortic artery (aorta) is the main artery that carries oxygenated blood from the heart to the rest of the body, the coronary arteries supply blood to the heart muscle itself, and the subclavian arteries supply blood to the arms and some parts of the brain. These functions differentiate them clearly from the pulmonary artery's role in pulmonary circulation.