Topics: The Vascular System and Blood Flow Quiz
What is the main role of arteries in the cardiovascular system?
A. Returning blood to the heart
B. Exchanging gases and nutrients with the tissues
C. Regulating blood distribution to the various tissues
D. Carrying oxygenated blood away from the heart
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Which component makes up about 55 percent of blood and is composed mostly of water?
A. Plasma
B. Red blood cells
C. Platelets
D. White blood cells