Circulatory System

Wikipedia
Function-
The circulatory system's function is to pump oxygenated blood all around your body.
Extra-
The Circulatory System transports blood, nutrients, and oxygen to your body. The circulatory system takes blood with carbon dioxide to the lungs. The lungs release the carbon dioxide. Oxygen poor blood goes from the right ventricle to the lungs. It goes through pulmonary artery. Blood rich with oxygen goes to the left atrium from the lungs. From the left atrium blood rich with oxygen goes to the left ventricle. Then it gets supplied to the rest of the body. Blood rich with oxygen leaves the left atrium. It then goes through the aorta while it is pumped to your body. From your body, blood poor with oxygen goes back to the right atrium. Then it flows down to the right ventricle. After that, the process begins again.

 Organs-
heart-main part of the circulatory system, pumps blood to your body and keeps you alive
lungs-replace  blood poor with oxygen with blood rich with oxygen. Blood rich with oxygen then gets given to your body. Blood poor with oxygen goes out of your body when you breath out
arteries-takes oxygen rich blood from the away from the heart and to organs
veins- carries blood with low levels of oxygen back to the heart

 Interactions with other systems-
The circulatory system interacts with literally every system. A very key function is delivering oxygen rich blood to your organs. The circulatory system uses an effective and efficient system of transporting oxygen to organs through the blood. This is how it touches each and every system. If you take a closer look you can see it has a strong relationship with the respiratory system. This is due to the fact that the oxygen it is carrying all over the body is from the respiratory system. When you breathe in oxygen the circulatory system distributes it. If the circulatory system did not interact with other systems we could not survive.

Analogy-
Ancient / Classical History 

The circulatory system reminds me of aqueducts and sewers because it takes both oxygen rich blood around the body and oxygen depleted blood to the heart. The aqueducts carry clean and drinkable water from ponds and lakes to big cities. The sewer system does the opposite by taking waste out of the major cities. The sewers are the veins while the aqueducts acts as the arteries. The blood with not much oxygen is the waste while the blood with quite a lot of oxygen is the clean water. This may not be a perfect match, but it helps me better understand this topic.


Structure and Function (Heart)-
The heart is the main organ of the circulatory system. There are four valves which job is to insure that blood cannot flow backwards. The wall that is located on the left ventricle is relatively larger than the right because it pumps blood for the use of the whole body. The ventricle on the right only pumps blood for the lungs. The heart has its own specific blood supply which is received through the coronary arteries. One important feature of the heart is the wall. The epicardium is a layer of membrane which is extremely thin. It works to protect the outer area of the heart. The myocardium, made of muscle tissue, is quite thick and does most of the pumping. The endocardium is the innermost layer. Its job is to keep blood from cling to the heart. All the pieces of the heart such as the ventricles and walls are structured the way they are to perform their function.

 Sources:
http://www.bbc.co.uk/bitesize/standard/biology/the_body_in_action/the_need_for_energy/revision/6/
http://www.newhealthadvisor.com/Heart-Structure-and-Function.html

Fun Facts- Blood must go through many parts of your heart to give you and your body oxygen rich blood. Your lungs play such a big role with helping you breath and live (lungs help supply oxygen rich blood to you).

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