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.
Left ventricle. Blood flows into the right atrium from the superior and inferior vena cava. It then passes to the right ventricle which pumps it to the lungs. It returns from the lungs into the left atrium and goes into the left ventricle to be pumped to the rest of hte body.