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 pump on the left hand side receives oxygen-rich blood and then pumps it out into the arteries to deliver its oxygen around the body. Blood in need of oxygen enters heart. Blood in need of oxygen from around the body travels in the veins to the heart. This blood in need of oxygen (also called deoxygenated blood) is usually shown as blue or purple on diagrams. This âdeoxygenatedâ blood enters the top right hand side chamber (shown on left in diagram) of the heart, which is called the right atrium, via two large veins. Blood from the upper body, e.g. the head and arms, comes in via the superior vena cava.