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.
Overview. The left atrium is the chamber of the heart that receives oxygen-rich blood from the lungs. Blood moves from the left atrium, through the mitral valve, into the the main pumping chamber of the heart--the left ventricle, and then out to the body.Any condition that increases pressure in this portion of the cardiac system can lead to enlargement of the left atrium.verview. The left atrium is the chamber of the heart that receives oxygen-rich blood from the lungs. Blood moves from the left atrium, through the mitral valve, into the the main pumping chamber of the heart--the left ventricle, and then out to the body.