You are purchasing an individual soft loop and it's associated hardware. This is not a set. Coated, belt size adjustment, Pull-the-Dot snaps, compatible with all of our holster products.
As the left ventricle contracts, the mitral valve closes and the aortic valve opens. The closure of themitral valve prevents blood from returning to the left atrium, and the opening of the aortic valve allows the bloodto flow into the aorta and from there throughout the body.lood Flow The heart's cycle begins when oxygen-poorblood from the body flows into the rightatrium. Next the blood flows through the rightatrium into the right ventricle, which serves asa pump that sends the blood to the lungs.Within the lungs, the blood releases wastegases and picks up oxygen.
   The right atrium is where the major veins (vena cava)  connect to the upper part of the heart, returning deoxygenated  blood from the body.Blood then flows through the tricuspid  valve from the right atrium into the right ventricle.   The right ventricle is the lower part of the right side.The  right ventricle contracts to push blood through the pulmonary  valve into the pulmonary arteries, which connect to the lungs.    The left atrium receives the blood that returns from the  lungs in the pulmonary veins.lood then flows through the  mitral valve into the left ventricle.   The left ventricle contracts to pump the blood out through  the aortic valve into the aorta (a large expandable  artery), from which blood flows out into the other arteries. . + 180 others found this useful. Lisa Frost.