From the reference below, "In a closed system, blood is always contained within vessels (arteries, veins, capillaries, or the heart itself). In an open system, blood (usually called hemolymph) spends much of its time flowing freely wit...
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Vornado Air Circulation Systems was founded 1989
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Softus, thanks for the reply. I have located the vent plug on the radiators. They are opened using a small key. The water pipe which connects to the heating pipe is closed. There is an expansion tank which is empty with a relief valve off t...
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The circulatory system controls the flow of blood around the body it is made up of vessels and muscles. The blood picks up oxygen in the heart and deliveries it throughout the body, it then carries carbon dioxide back to be exhaled by the l...
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The circulatory system is any where that you have blood cells as this system moves around your blood. The main organ of this system is your heart which is located in your chest.
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main organs of the circulatory system are the heart and veins. their purpose is to circulate blood in the body.
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M aintaining a healthy diet that doesn't contain too much cholesterol and fatty foods. Also you could exercise and stretch.
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