Asker's rating. 1  Fred is correct the smaller the number the bigger the metal. 2  12 gauge is thinner than 7 gauge. 3  The gague refers to the thickness of the metal in question. the issue of strenght is really determines by the type of metal, not necessarily it's thickness.
The left ventricle pumps oxygen-rich blood out of the heart and into an artery called the aorta. From the aorta, blood branches out into a series of ever smaller tube-like vessels: arteries, arterioles and finally capillaries. The capillaries deliver the blood's oxygen and nutrients to cells.
Anatomy of the coronary arteries. Your left ventricle pumps blood into the main artery of your body, called the aorta. See a picture of the heart and coronary arteries. Close to the heart, the two main coronary arteries branch off of your aorta.1  The left main coronary artery is a short vessel that branches into the:our left ventricle pumps blood into the main artery of your body, called the aorta. See a picture of the heart and coronary arteries. Close to the heart, the two main coronary arteries branch off of your aorta.