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www.reference.com/article/circulatory-system-6c4f7c268efd13c

The main function of the circulatory system is transporting blood, oxygen, hormones, nutrients and other important substances throughout the body. The circulatory system is actually two separate systems of circulation, pulmonary and systemic, both of which interact with...

www.reference.com/article/circulatory-system-work-8ad3981a1842f82c

The beginning of the blood's journey through the body happens when the heart relaxes between beats and the blood flows from the atria to the ventricles from where the blood is pushed into the large arteries and then on to the smaller arteries where it releases oxygen ...

www.reference.com/article/parts-circulatory-system-cd24cf15ca929869

The three major parts of the circulatory system are the heart, blood and blood vessels, according to Hillendale Health. The circulatory facilitates the movement and delivery of oxygen, water and nutrients to the body's cells. This organ system also removes metabolic was...

www.reference.com/article/open-circulatory-systems-d74e98635edc7102

Open circulatory systems are found in mollusks, arthropods and several other invertebrates. Open circulatory systems work by pumping blood into a hemocoel, which in turn diffuses blood and pumps it back into the circulatory system. Blood is then pumped by the heart into...

www.reference.com/article/function-circulatory-system-e37ed045bb880db4

The circulatory system allows blood to circulate throughout the body and transport nutrients, oxygen, hormones, carbon dioxide and blood cells to every part of the body in order to nourish it and help the body fight diseases. It also helps stabilize the normal body temp...

www.reference.com/article/organs-circulatory-system-2f70e14edd8a51f8

The main organ in the circulatory system is the heart, according to Hillendale Health. The two other major parts of the circulatory system are the blood and the blood vessels.

www.reference.com/article/closed-circulatory-system-3c5c43cbe4bb8b69

A closed circulatory system is a system that transports blood throughout an organism's body using a system of blood vessels. The heart pumps blood rich in oxygen through arteries throughout the body. Blood filled with waste and deprived of oxygen returns to the heart th...