The primary functions of your lungs are to transport oxygen from the air you breathe into your bloodstream while taking away carbon dioxide, which is released into the air when you breathe out.
The heart is made up of four chambers, the left atrium, right atrium, left ventricle and right ventricle. There are four valves in the anti-human heart, they ensure that blood only goes one way, either in or out. These blood cells float in a yellow liquid called blood plasma. Blood plasma is made up of 90% water and also contains various nutrients, electrolytes, gases, proteins, glucose and hormones.