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.
The left ventricle receives blood from the left atrium of the heart via the relaxation of the mitral valve. When it contracts, it pushes the blood volume through the aortic valve and into the aorta. In comparison with the right ventricle, the left is both shorter in length and is transversely circular in a concave manner.