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The cardiovascular system's main organ is the Heart. The other organs associated are blood vessels. The cardiovascular system is responsible for pumping and circulating the blood.

The lungs play a vital role in the cardiovascular system, however; they are not technically part of this system even though a lot of people think they are.

The respiratory system includes the pharynx, larynx, trachea, bronchi, lungs and diaphragm. These are the organs used for breathing.

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15y ago

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