1 To find what your carâs fuel economy is (Metric System), multiply the amount of fuel used by 100 and divide that by the total kilometres driven. 2  Example: 42 litres x 100 / 400 = 10.5 litres / 100km.
There are four chambers of the heart: a right atrium, a right ventricle, a left atrium and a left ventricle. First, deoxygenated blood (blood without oxygen) is carried from the body through the Inferior and Superior Vena Cava. From these vessels, the blood is dumped into the Right Atrium of the heart.
deoxygenated blood at the superior and inferior vena cava enters in the R atrium also venous blood from the heart muscle itself enters the R atrium through the coronary sinus; goes through the tricuspid (R AtrioVentricular) valve; enters the R ventricle; pulmonary semilunar valve; L & R pulmonary arteries to the L&R lungs; oxygenated blood travels ...