The system of the heart, blood, and blood vessels, it moves oxygen, nutrients and waste. Circulatory system. The circulatory system is like the body's transportation network, delivering essential substances to cells and removing waste.
Circulatory System: The system of the heart, blood, and blood vessels, it moves oxygen, nutrients and waste. Circulatory system. The circulatory system is like the body's transportation network, delivering essential substances to cells and removing waste.
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