The cardiovascular system is a component of the circulatory system (the other component being the lymphatic system) and consists of the heart, blood vessels and blood. Its 3 main functions include:
1. Transport of oxygen and nutrients toward and wastes away from cells of our body
2. Immunological protection of our body from foreign organisms and substances
3. Maintenance of homeostasis including the regulation of body temperature, blood pressure, electrolytes and water balance.
Because the cardiovascular system interacts with other organs of the body in a complex fashion, you cannot simply state that it has one main or overall function. Like most organ systems of the body it serves several vital roles which are necessary for the survival of the organism. However, in terms of IMPORTANCE, the function of transportation (of which oxygen if often cited as essential) would probably rank as paramount above the maintenance of homeostasis and immunologic protection.
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Transport- Transportation of oxygen, nutrients and hormones to cells and removal of metabolic wastes such as carbon dioxide, heat and nitrogenous wastes.
Regulation- Of body tempreture, fluid pH and water content of cells
Protection- By white blood cells, antibodies and complement proteins that circulate in blood and defend again foreign microbes and toxins. Also white blood cells clot when body is injured.
Transporting oxygenated blood to the different organs and muscles of the body so their cells can respire, and to transport deoxygenated blood to the lungs to pick up oxygen.
> The molecule in blood that allows it to pick up Oxygen is haemoglobin, When it has Oxygen it becomes Oxyhaemoglobin.
The 2 main point of the circulatory system are:
to carry blood around the body;
and to carry waste nutrients around.
the two functions that the cardiovascular system does for your body is your heart blood and blood vessels :)
its proper function is responsible for the delivery of oxygen and nutrients to all cell's as well as the removal of waste products.