What Does The Circulatory System Contain?

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Anonymous Profile
Anonymous answered
The circulatory system contains the blood, veins, arteries, capillaries, heart
Kyoko Katayama Profile
Kyoko Katayama answered
The circulatory system contains blood and urine.  Each time the blood passes through the kidneys, a portion of the urine is filtered off and you pee it out, making you feel SO much better, don't you think?

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