Located on the bottom half of the heart, lies the ventricles. The main function is to deliver blood to the lungs to get oxygen and then deliver the oxygen to the body. The blood vessels have a lot of fluid weight that the left side has to over come in order to get the food to the cells. As we learned the atria deliver the blood to the ventricles by means of an “atrial kick” that charges them. Once charged they have enough force to over come the weight of the fluid in the blood vessels and deliver that much needed nutrients.
The right side is charged with the ability to deliver deoxygenated blood to the lungs to be replenished with oxygen. As the blood enters the atria from the body all used up of its oxygen supply the right side is pumping the blood to the lungs and the now oxygenated blood returns to the left atria. The valves of the heart prevent back flow of blood into the atria due to the structure of the valves. The valves have to be strong to hold back the tremendous power the ventricles exert.
The left side is charged with the awesome responsibility of keeping our bodies alive. The powerful left side has to be strong to overcome the awesome pressure of the blood still in circulation. As the blood enters the left side from the contraction of the left atria, the ventricles becomes charged or flexed from the “atrial kick”. The stretch of the left side gives it enough power to contract efficiently and forcefully overcome the forces of the circulatory system.
It is easy to understand why the heart is structured this way with the right side being smaller than the left side. The heart is a muscle and like every muscle it gets stronger with the amount of work it has to do. Therefore the left side having to overcome more force than the right side has grown to be a lot larger. Working with conjunction with the atria, the ventricles have a lot of work to do and it is definitely a lot easier to pump blood with the help of your friends.