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.
The deoxygenated blood enters the right atrium from the superior and inferior vena cava. The deoxygenated blood then goes through the tricuspid valve into the right ventricle. From the right ventricle the deoxygenated blood flows through the pulmonary valve to the lungs to be oxygenated.