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.
1 Four-chambered heart (structure, function). 2  Deoxygenated blood returns to the heart: superior/inferior vena cava â right atrium. 3  Deoxygenated blood gets pumped to the lungs: right atrium â right ventricle â pulmonary artery â lungs. 4  Blood arrives at the lungs and gets oxygenated.