The retrospective premium, The basic premium: Basic premium factor times stat&& premium (in most of the. following, it will be convenient to think of standard premium as unity. Then the. basic premium and the basic premium factor are the same.), The loss conversion factor for expenses which vary with loss,
Chambers of the Heart. The heart has four chambers: two atria and two ventricles. 1  The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. 2  The right ventricle pumps the oxygen-poor blood to the lungs.3  The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. 2  The right ventricle pumps the oxygen-poor blood to the lungs. 3  The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle. 4  The left ventricle pumps the oxygen-rich blood to the body.
The heart pumps blood in a two-step process. The atria pump blood into the ventricles and then the ventricles pump blood out of the heart. Chambers of the heart fill with blood during a relaxation phase (diastole) and eject blood during a contraction phase (systole). Atrial systole precedes ventricular systole.