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The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygencarbon dioxidehormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseasesstabilize temperature and pH, and maintainhomeostasis. The study of the blood flow is called hemodynamics. The study of the properties of the blood flow is calledhemorheology.
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