★ Circulatory and Lymphatic System Quiz
How are white blood cells different than red blood cells?
A. They are smaller and carry more nutrients
B. They are larger and have a nucleus
C. There are more kinds of red blood cells
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Which of the following arteries has the highest concentration of carbon dioxide?
A. aorta
B. carotid artery
C. pulmonary vein
D. mesenteric artery
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